Title:
AUTOMATIC CLOSING DEVICE FOR FIRE DOOR
Document Type and Number:
Japanese Patent JP2018104887
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an automatic closing device for a fire door capable of bringing a latch mechanism into a release state manually and easily without using a fire door.SOLUTION: When a fire breaks out, an automatic closing device 1 for a fire door can automatically close a fire door by bringing a latch mechanism part 3 into a release state by a start part starting, and by releasing engagement of a latch 3a and an engaging member H of the fire door, and it can also manually close the fire door by bringing the latch mechanism part 3 into a release state by pulling the fire door in a closing direction and by releasing engagement of the latch 3a and the engaging member H of the fire door. In a housing 2, an opening 10 for release operation is provided, and an operation of bringing the latch mechanism part 3 into a release state can be performed from the outside through the opening 10 for release operation.SELECTED DRAWING: Figure 4
Inventors:
IKEHATA TOSHIYUKI
KAWASHIMA TAKAHIRO
KAWASHIMA TAKAHIRO
Application Number:
JP2016248851A
Publication Date:
July 05, 2018
Filing Date:
December 22, 2016
Export Citation:
Assignee:
NOHMI BOSAI LTD
International Classes:
E05C21/02; A62C2/06; E05B65/06; E05B65/10; E05C3/24; E05F3/22; E05F15/72; E06B5/16
Attorney, Agent or Firm:
Saiun International Patent Service Corporation