To provide a fire door closing device for closing a fire door and a fire door, which can close an opening of a structure for exercising the disaster prevention such as fire prevention and noise insulation properties, for closing the fire door with high airtightness without having a user operating a handle lever, etc.
A rod 40 is released from a holding state by a trigger device 60 and allowed to move upward by a cremorne lock 70 when a door body 20 turns in a closing direction. Then the tip end section 40a of the rod 40 is inserted inside a receiver 50 while being guided by a tapered surface 40c and abutted surface 40e by the energizing force of a compression coil spring 42, in this time the door body 20 turned around hinges 15, 15 closes an opening 10 while keeping in contact with and pressurizing a seal material 16 to achieve disaster prevention such as fire prevention and noise insulation properties required for the fire door 1.
COPYRIGHT: (C)2009,JPO&INPIT
Koji Dekura
Kenji Nakamata
Zenzo Kuno
| JP9041763A | ||||
| JP11002057A | ||||
| JP3097235U |