To appropriately and homogeneously perform fastening operation of a bolt or nut of an isolator protection device by simple operation while securing the locking effect of the fastened bolt or nut.
The isolator protection device 2 includes a lower flange 9 fixed to an isolator provided between a foundation and a structure on the foundation; an elastic body 20 which is elastically deformed, when the lower flange 9 is displaced in a separating direction, by compressing force with a regulating plate 26; and a bolt 27 which regulates the position of the regulating plate 26 to the foundation. Projections 22 are provided on a first surface 20a and a second surface 20b which are the lower surface and upper surface of the elastic body 20. In a fastening step of the bolt 27, when fastening torque is sharply increased in contact of the first surface 20a with the lower flange 9 and contact of the second surface 20b with the regulating plate 26 by elastic deformation of the projections 22, the fastening step is completed.
FUJINAMI YASUTAKE
TATSUGAMI HIROAKI
YANAGI KATSUYUKI
KATO NAOKI
KAIHATSU MIYUKI
MAENO KEI
IGARASHI HARUTO
MORIMOTO TOSHIYUKI
MAEDA CONSTRUCTION
SWCC SHOWA DEVICE TECH CO LTD
ZENITAKA CORP
JP2008215442A | 2008-09-18 | |||
JPH1151113A | 1999-02-23 |
Next Patent: FITTING FRAME ADJUSTING IMPLEMENT AND FITTING FRAME ADJUSTING STRUCTURE USING THE SAME