LOCK DEVICE FOR FIRE ESCAPE OF MULTIPLE DWELLING HOUSING

摘要

PURPOSE:To make it possible to go in and out of a building during the maintenance and inspection thereof by providing a lock device to a doorway for a fire escape of a multiple-dwelling housing, locking it in normal time and, at the same time, providing an unlocking means to unlock the lock device during the maintenance of an elevator. CONSTITUTION:When an elevator E works as usual, an occupant opens a door 43 from a living room 41 and passes a hall 42, and the occupant gets in the elevator E. After that, when the occupant can not use the elevator E for maintaining and inspecting the elevator E, in the case a maintenance technician closes a maintenance switch S, a relay R is energized to close a contact R2a. Magnet coils k1-4 are excited, a lock device 45L is unlocked, so that an emergency door 45 is freely opened. Accordingly to the constitution, even in the case the elevator E is maintained and inspected, the occupant opens the emergency door 45 from the hall 42, and the occupant can freely go in and out of a building by passing through the fire escape 44.