Title:
天井健全性評価機構及び天井構造
Document Type and Number:
Japanese Patent JP7423430
Kind Code:
B2
Abstract:
To provide a ceiling soundness evaluation mechanism and a ceiling structure that can evaluate the soundness of the ceiling of a building without fail after an earthquake force has been applied on the building, while simplifying the device structure without needing a power source and reducing the cost of construction.SOLUTION: The ceiling soundness evaluation mechanism of the present invention relates to a ceiling soundness evaluation mechanism 1 for determining a relative displacement of a ceiling to a wall, and the ceiling soundness evaluation mechanism includes: a light emission unit 10 fixed to a wall P or to ceiling Q, the light emission unit emitting light or being colored by causing a light emitting material to make a chemical reaction when receiving an external force; a trigger unit 30, which moves in association with a displacement when a relatively horizon displacement or a relatively vertical displacement has occurs between the wall and the ceiling, and gives an outside force to the light emitting unit so that the light emitting element emits light or is colored when the displacement is at least a predetermined distance.SELECTED DRAWING: Figure 1
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Inventors:
Yuji Morii
Yasuko Sakamoto
Rie Okazawa
Yasuko Sakamoto
Rie Okazawa
Application Number:
JP2020100645A
Publication Date:
January 29, 2024
Filing Date:
June 10, 2020
Export Citation:
Assignee:
Shimizu Construction Co., Ltd.
International Classes:
G01M99/00; E04B9/00
Domestic Patent References:
| JP2011149899A | ||||
| JP2003262554A | ||||
| JP10294001A | ||||
| JP2009187367A | ||||
| JP2016143620A |
Foreign References:
| US4771724 |
Attorney, Agent or Firm:
Yasushi Matsunuma
Kenichi Kawabuchi
Kazuzumi Nishizawa
Kenichi Kawabuchi
Kazuzumi Nishizawa