AUTOMATIC DOOR OPENING DEVICE USING THERMAL EXPANSION OF SHAPE MEMORY ALLOY

Abstract

When an emergency situation such as a fire occurs, a rescuee trapped in a room is embarrassed or loses judgment, and thereby a situation of forgetting how to release the locking device, repeating an erroneous operation, or the like occurs. Therefore, when a situation such as a fire occurs, a front door, which is a most effective evacuation path, cannot be used, and thereby in most cases of fire, deaths in front of the door are frequently reported. The present invention is made to improve the above-described problems, and relates to a fire safety door lock of which a lock state is automatically released by automatically operating, as illustrated in the drawing below, a spring composed of a shape memory alloy connected to a locking bar of the digital door lock when being operated, and which is capable of being opened independently without being affected by other circuits.

Claims

1. An automatic door opening device using thermal expansion of shape memory alloy, comprising a fire safety door lock of which a lock state is automatically released by automatically operating a spring composed of a shape memory alloy connected to a locking bar of the digital door lock when being operated, and which is capable of being opened independently without being affected by other circuits.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0008] FIG. 1 is a view illustrating an automatic door opening device using thermal expansion of shape memory alloy according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE DISCLOSURE

[0009] During a detection operation of an existing sensor caused by a fire, an anxiety that the door may not be opened due to a circuit being damaged by heat is eliminated, and a quick response is possible against the fire, as well as a best evacuation passage is secured. In addition, it has an advantage that can creates a door that automatically opens in case of a fire by interlocking with the safety door made of the shape memory alloy, which minimizes personal damage and reduces property damage due to the rapid response measure against the fire by allowing the rescuee to quickly evacuate from an ignition site guide to an instinctive evacuation ability even if the rescuee is embarrassed or loses judgment. When an emergency situation such as a fire occurs, a rescuee trapped in a room is embarrassed or loses judgment, and thereby a situation of forgetting how to release the locking device, repeating an erroneous operation, or the like occurs.

[0010] Therefore, when a situation such as a fire occurs, a front door, which is a most effective evacuation path, cannot be used, and thereby in most cases of fire, deaths in front of the door are frequently reported. The present invention is made to improve the above-described problems, and relates to a fire safety door lock of which a lock state is automatically released by automatically operating, as illustrated in the drawing below, a spring composed of a shape memory alloy connected to a locking bar of the digital door lock when being operated, and which is capable of being opened independently without being affected by other circuits.