Title:
TOP PIVOT WITH ELECTROMAGNETIC LOCK FUNCTION
Document Type and Number:
Japanese Patent JP3960401
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce an installation cost by integrally providing a pivot hinge suspending mechanism arranged on the upper frame side of emergency doors and an electromagnetic lock mechanism for locking the emergency doors on the wall side at normal time and releasing a lock state of the emergency doors in emergency.
SOLUTION: Usually, a stopper 71 descends by elastic force of respective compression springs to house emergency doors D on the wall side so as to hold a passage in a release state. In emergency such as a fire, a control signal from the control part is outputted to a solenoid 5 with respective emergency doors D, and respective members are actuated in the arrow F1 to F3 directions to push the stopper 71 upward so as to release an electromagnetic lock state. Then, the doors are automatically closed by release mechanisms provided in the respective emergency doors D to close the passage. In the case where the emergency doors D are housed again in the formed state by extinguishment of the fire, when a descended reset member 82 is pushed up by a proper tool, the locking part 82A of the reset member 82 is locked on the locking part 61B of a pivotally fixing lever 61, so that the doors return to the former state to be restored to a lock state.
Inventors:
Kiyono Hideyuki
Ryoichi Sasaki
Ryoichi Sasaki
Application Number:
JP16880898A
Publication Date:
August 15, 2007
Filing Date:
June 16, 1998
Export Citation:
Assignee:
Nitto Kohki Co., Ltd.
International Classes:
A62C2/06; E05D7/00; (IPC1-7): A62C2/06; E05D7/00
Domestic Patent References:
| JP48037293U | ||||
| JP61259073A | ||||
| JP43025120B1 | ||||
| JP60008354U | ||||
| JP7033361U |
Attorney, Agent or Firm:
Takeo Masuda
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