| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration damper for structure having anti-vibration function and air-cushion function capable of performing an axial accurate displacement and absorbing earthquake energy without showing any displacement of relative displacement of two members.SOLUTION: This vibration damper for structure comprises a rod body 3 extending within a cylinder body 2, arranged between the rod body and the cylinder body in such a way that they can be displaced relatively and formed with a guide hole 3b with a bottom extending axially from its extremity end by a prescribed length, a rubber body 9 fixed between an inner wall face of the cylinder and an outer peripheral face of the rod body to absorb vibration energy and a guide rod 5 having one end fixed to the end part of the cylinder and the other end formed at the rod body and being fitted and inserted into the guide hole with a bottom in a relative displacing manner. The guide rod fitted and inserted into the guide hole with bottom part prevents vibration when the rod body and the cylinder are displaced relatively in regard to the relative displacement of the cylinder and the rod body and at the same time, a sealed space present between the guide hole with bottom part and the extremity end of the guide rod may act as an air-cushion function. |
