Title:
シャッター
Document Type and Number:
Japanese Patent JP6401500
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve fireproof performance by preventing the outflow of combustible gas in a fire, by reducing a heating foaming material.SOLUTION: In a shutter 1, a shaft 6 for hoisting and delivering a slat curtain is installed in a shutter case. Substantially C-shaped first - third winding diameter spacers 20, 21, and 22 for winding the slat curtain are provided on an outer peripheral surface of the shaft 6. The second winding diameter spacer 21 is formed of PEEK of an incombustible resin, and is fixed by a screw to a flange part 28 of a second drum 14 via a hole 6b of the shaft 6. In both end parts of the shaft 6, the PEEK of an incombustible resin material is provided as a first sealing material and a second sealing material in a clearance between a support shaft 12 of a spring set 10 and first and second drums 13 and 14 and a clearance between an outer peripheral surface of an electric motor M and a crown 18. Even when becoming the high temperature in a fire, the second winding diameter spacer 21 melts, and blocks up the hole 6b of the shaft 6, and the first sealing material and the second sealing material melt, and seal the respective clearances.
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Inventors:
Kensuke Tanaka
Application Number:
JP2014113314A
Publication Date:
October 10, 2018
Filing Date:
May 30, 2014
Export Citation:
Assignee:
Lixil inc.
International Classes:
E06B9/17; A62C2/06; E06B5/16
Domestic Patent References:
| JP2013007189A | ||||
| JP2007182745A | ||||
| JP2007138570A | ||||
| JP5038277U | ||||
| JP3186112A | ||||
| JP2010229241A | ||||
| JP58027496U |
Foreign References:
| US20110083813 |
Attorney, Agent or Firm:
Sumio Tanai
Suzuki Mitsuyoshi
Kenichi Kawabuchi
Yuichiro Shimizu
Suzuki Mitsuyoshi
Kenichi Kawabuchi
Yuichiro Shimizu