Title:
免震装置
Document Type and Number:
Japanese Patent JP7182518
Kind Code:
B2
Abstract:
To provide a seismic isolation device capable of suppressing turning-up.SOLUTION: A seismic isolation device 1 of the present invention comprises a lamination structure 3 and additional members 7. The lamination structure has, on the end side of at least one of the upper side and the lower side thereof, a small-diameter hard material layer 4S that is the hard material layer, and a large-diameter hard material layer 4L that is the hard material layer larger in diameter than the small-diameter hard material layer. The additional member is arranged on the inner side in the axial direction with respect to a step portion 4LM located on the outer peripheral side of the small-diameter hard material layer. The additional member is configured to be capable of pressing an axially-outer portion outward in the axial direction with respect to the additional member of the lamination structure by the force applied from an inner peripheral side portion to the additional member of the lamination structure when the seismic isolation device is deformed in the horizontal direction. In a state where the seismic isolation device is not deformed in the horizontal direction, the axial thickness of the additional member is maximum at the position of an outer peripheral surface portion 33 of the lamination structure, which is located on the inner peripheral side of the additional member.SELECTED DRAWING: Figure 1
Inventors:
Takahiro Mori
Application Number:
JP2019113153A
Publication Date:
December 02, 2022
Filing Date:
June 18, 2019
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
F16F15/04; E04H9/02; F16F1/40
Domestic Patent References:
| JP2010180962A | ||||
| JP2009162376A | ||||
| JP2000081087A | ||||
| JP2001140977A | ||||
| JP2014047926A | ||||
| JP1029539A | ||||
| JP11141180A |
Attorney, Agent or Firm:
Kenji Sugimura
Mitsutsugu Sugimura
Yasuyuki Komatsu
Rei Ito
Mitsutsugu Sugimura
Yasuyuki Komatsu
Rei Ito