PROBLEM TO BE SOLVED: To provide a seismic isolator, when an earthquake occurs, capable of preventing overturn and movement of furniture and yet preventing a function of casters from being impaired.SOLUTION: A seismic isolator 10 is installed at a bottom part of an installation 30 so as to surround a plurality of casters 20 attached to the bottom part of the installation 30. The seismic isolator includes: an outer bellows body 3; an inner bellows body 4 having an inner diameter smaller than an inner diameter of the outer bellows body 3; an outer peripheral wall to be connected to a lower end of the outer bellows body 3; a lower cap 2 having an inner peripheral wall to be connected to a lower end of the inner bellows body 4; an upper cap 1 having an outer peripheral wall to be connected to an upper end of the outer bellows body 3, and an inner peripheral wall to be connected to an upper end of the inner bellows body 4 and attached to the bottom part of the installation 30; and air supply means for supplying air to a space with airtightness, formed of the outer bellows body 3, the inner bellows body 4, the lower cap 2, and the upper cap 1.SELECTED DRAWING: Figure 5
【課題】地震発生時に家具類の転倒及び移動を防止でき、かつキャスターの機能を損なわない免震装置を提供することを目的とする。【解決手段】設置物30の底部に取り付けられた複数のキャスター20を囲むように設置物の底部に装着される免震装置10であって、外側蛇腹体3と、外側蛇腹体3の内径より小さな内径を有する内側蛇腹体4と、外側蛇腹体3の下端部に連結される外周壁と、内側蛇腹体4の下端部に連結される内周壁を有する下側キャップ2と、外側蛇腹体3の上端部に連結される外周壁と、内側蛇腹体4の上端部に連結される内周壁を有し、設置物30の底部に取り付けられる上側キャップ1と、を有し、外側蛇腹体3、内側蛇腹体4、下側キャップ2及び上側キャップ1により形成された気密性を有する空間に、空気を供給する空気供給手段を有することを特徴とする免震装置。【選択図】図5
SEISMIC ISOLATOR
免震装置
2018-01-18
Patent
Elektronische Ressource
Japanisch
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