To provide a door unlocking device which enables a door to be easily opened without causing intermeshing, even when a room interior is brought into a high pressure state by a jet of fire extinguishing gas and the like.
A latch mechanism (unlocking device) 27 includes a strike 40 which is provided on one of the opposed surfaces 21a and 22a, joined to each other, of the pair of doors 21 and 22, and a latch 35 which is provided on the other one and which can protrude from/recede into the strike 40. In the latch mechanism (unlocking device) 27, the latch 35 is disposed in such a manner that a protruding/receding direction of the latch 35 agrees with an inclined axis line L1 elongated while being gradually tilted in a door opening direction F toward the other surface 21a from the one surface 22a.
SAKAI KENJI
KOJIMA TOSHIO
KONDO JUN
UNNO TSUTOMU
FUKAO HITOSHI
| JPH08326390A | 1996-12-10 | |||
| JP2008285898A | 2008-11-27 | |||
| JP2004285656A | 2004-10-14 |
Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama