JPH0321352U

JPH0321352U -

Info

Publication number: JPH0321352U
Application number: JP8116189U
Authority: JP
Priority date: 1989-07-12
Filing date: 1989-07-12
Publication date: 1991-03-04

Description

[Brief explanation of drawings]

第１図及び第２図は夫々本考案に係る形状記憶
合金を用いた防火扉止め金具の一実施例の常温時
、並に火災発生時の状態を示す縦断面図、第３図
及び第４図は夫々本考案に係る防火扉止め金具の
取付位置を示す正面図並に縦断面図である。Ａ……防火扉、Ｂ……扉枠、Ｄ……ロツクピン
、１……筒状片、１ｂ……水平仕切板、３……係
止孔、４……ロツクピン本体、５……垂直桿、６
……水平板、７……形状記憶合金製賦勢部材。 1 and 2 are longitudinal sectional views showing an example of the fire door stopper using the shape memory alloy according to the present invention at room temperature and in the event of a fire outbreak, and FIGS. The figures are a front view and a longitudinal cross-sectional view showing the mounting position of the fire door stopper according to the present invention. A... Fire door, B... Door frame, D... Lock pin, 1... Cylindrical piece, 1b... Horizontal partition plate, 3... Locking hole, 4... Lock pin body, 5... Vertical rod, 6
...Horizontal plate, 7... Shape memory alloy activation member.

Claims

[Scope of Claim for Utility Model Registration] 1. A locking pin that engages and disengages from a locking hole provided in an outer abutting portion of the door frame is fitted into a cylindrical piece embedded in a portion of the door body facing the door frame so as to be freely retractable. With,
A force member made of a shape memory alloy is interposed between the lock pin and the cylindrical piece, and the lock pin is moved into the cylinder by deformation of the force force member made of the shape memory alloy as the temperature rises during a fire. A fire door stopper using a shape memory alloy, characterized in that it is configured to protrude from a shaped piece. 2. A cylindrical piece embedded in the part of the door body facing the door frame and having a horizontal partition plate disposed in the middle, and a lock pin body that hangs down from the lock pin body fitted in the upper space of the horizontal partition plate in the cylindrical piece. , and a lock pin having a horizontal plate at the lower end of a vertical rod that slidably passes through the partition plate, and a lock pin that is wound in a coil shape around the vertical rod of the lock pin, and has both upper and lower ends connected to the horizontal partition plate and the horizontal plate. 2. A fire door stopper using a shape memory alloy according to claim 1, comprising shape memory alloy biasing members respectively fixed to the plates and configured to contract when a certain temperature is exceeded.