KR102270855B1 - Fire door assemblies - Google Patents

Abstract

The present invention relates to a fire door assembly. In accordance with the present invention, the fire door assembly comprises: a door frame which includes an upper frame and a lower frame, which are constructed on an upper side and a lower side of an entrance, and a first side frame and a second side frame constructed on one side and the other side of the entrance; and a fire door in which an upper side and a lower side of a front surface connected to the other side are rotatably connected to the upper frame and the lower frame by the medium of an upper pivot hinge member and a lower pivot hinge member so that an opening area formed by the door frame can be opened/closed. On the other side of the fire door and the second side frame facing the other side of the fire door, formed are an escape prevention bump and an escape prevention groove are formed so that the other side of the fire door cannot escape from the second side frame even if the fire door transforms itself by thermal expansion when a fire occurs. The escape prevention bump is inserted into the escape prevention groove when the opening area formed by the door frame by the fire door is closed, and is taken out from the escape prevention groove when the opening area formed by the door frame is opened. The present invention aims to provide a fire door assembly which is able to avoid escaping from a door frame even if a fire door transforms itself by thermal expansion when a fire occurs.

Description

FIRE DOOR ASSEMBLIES

The present invention (Disclosure) relates to a fire door assembly that prevents the fire door from being separated from a door frame even when the fire door is thermally expanded and deformed when a fire occurs.

Herein, background information related to the present invention is provided, which does not necessarily imply prior art (This section provides background information related to the present disclosure which is not necessarily prior art).

In buildings such as apartments or houses, as well as various office buildings, the indoor space is divided into a plurality of compartments according to the design purpose, and a door is installed in each compartment for the convenience of users.

In particular, a steel door or a fire door is mainly installed and used in the entrance or entrance of a building.

Here, the fire door is a kind of door manufactured for the purpose of blocking the transfer of flames between the compartments in case of a fire or to increase the evacuation time of the user by delaying the transition time of the flame, which itself is destroyed by the fire. Since there should be no such thing, it is mainly made of iron and metal materials.

In general, the above-mentioned fire door is installed so as to be able to open and close the open area of the door frame frame constructed on the edge of the doorway provided on the wall of the compartment.

That is, when the fire door is closed, the edge of the fire door is supported in contact with the inner end of the door frame frame to provide effects such as indoor and outdoor insulation and sound insulation, and as the fire door is opened, users can enter and exit.

On the other hand, the conventional fire door assembly composed of a fire door and a door frame frame has a problem in that the fire door thermally expands and deforms when a fire occurs.

That is, the upper and lower sides of the conventional fire door are supported on the door frame frame by the upper and lower pivot hinges, and the one side of the fire door equipped with the handle is supported on the door frame frame by the door lock, so the deformation due to thermal expansion is small, but the other side of the fire door, In other words, since the other side of the fire door between the upper and lower pivot hinges is not supported by the door frame, deformation due to thermal expansion is large, and there is a problem that a gap is formed between the door frames or, in severe cases, falls off the door frame.

And due to the above-mentioned problem, there was another problem that the toxic gas and flame were rapidly transferred, leading to a large-scale fire.

Accordingly, the inventors of the present application tried to solve the problem of the conventional fire door assembly, and as a result, the present invention was applied for a patent.

Korean Patent Publication No. 10-2020-0033042. Korean Utility Model Publication No. 20-0275878. Korean Patent Publication No. 10-2154233. Korean Patent Publication No. 10-1638116.

An object of the present invention (Disclosure) is to provide a fire door assembly that prevents the fire door from being separated from a door frame even if the fire door is thermally expanded and deformed when a fire occurs.

Herein, a general summary of the present invention is provided, which should not be construed as limiting the scope of the present invention (This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).

In order to solve the above problems, according to any one aspect of the various aspects describing the present invention, the upper and lower frames constructed on the upper and lower portions of the doorway, and the first constructed on one side and the other side of the doorway and a door frame frame having a second side frame; and a fire door in which the front upper and lower portions connected to the other side are pivotably connected to the upper and lower frames via the upper and lower pivot hinge members so as to open and close the open area formed by the door frame frame; On the second side frame facing the other side of the fire door and the other side of the fire door, even if the fire door is thermally expanded and deformed in the event of a fire, a separation prevention protrusion and separation prevention groove are formed to prevent the other side of the fire door from being separated from the second side frame, but to prevent separation The protrusion may be inserted into the escape prevention groove when the open area formed by the doorframe frame by the fire door is closed, and may be withdrawn from the departure prevention groove when the open area formed by the doorframe frame is opened.

In the fire door assembly according to an aspect of the present invention, the escape prevention groove is formed to extend concavely along the longitudinal direction of the second side frame, and the departure prevention projection is perpendicular to the fire door while protruding from the other side of the fire door to the other side. It may be formed to extend in the longitudinal direction.

In the fire door assembly according to an aspect of the present invention, a pocket is formed on the upper and lower frames, and the first and second side frames, into which a gasket in close contact with the rear surface of the fire door is fitted when the open area of the door frame frame is closed, When the open area of the door frame frame is closed, an air layer for blocking noise transmission and heat conduction may be formed between the separation prevention protrusion inserted into the separation prevention groove and the adjacent gasket.

In the fire door assembly according to an aspect of the present invention, on one side of the escape prevention groove adjacent to the outdoor side, a plate that cushions the escape prevention protrusion that is deformed by thermal expansion and collides with one side of the departure prevention groove when a fire occurs Springs may be installed to be spaced apart along the longitudinal direction of the separation prevention groove.

In the fire door assembly according to an aspect of the present invention, the leaf spring maintains a flat plate shape when it is less than 120 degrees Celsius, and when it exceeds 120 degrees Celsius, its center can be made of a shape memory alloy that is convexly curved toward the escape prevention protrusion. have.

According to the present invention, even if the fire door is deformed due to thermal expansion in the event of a fire, even if the fire door is deformed due to thermal expansion, since the escape prevention protrusion formed on the fire door is inserted and supported in the separation prevention groove formed on the second side frame of the door frame frame when the open area of the door frame is closed. It is possible to provide an effect of fundamentally preventing the other side from being separated from the door frame as in the prior art.

1 is a view showing a fire door assembly according to the present invention;
Fig. 2 is a cross-sectional view taken along line AA of Fig. 1;
Fig. 3 is a cross-sectional view taken along line BB of Fig. 1;
FIG. 4 is an enlarged view of "C" of FIG. 2;

Hereinafter, an embodiment implementing @ according to the present invention will be described in detail with reference to the drawings.

However, the intrinsic technical idea of the present invention cannot be said to be limited by the embodiments described below, and the following by those skilled in the art based on the intrinsic technical idea of the present invention. It is revealed that the range that can be easily suggested as a method of substitution or change of the embodiment described in is included.

In addition, since the terms used below are selected for convenience of explanation, in grasping the intrinsic technical idea of the present invention, they are not limited to the dictionary meaning and are appropriately interpreted as meanings consistent with the technical spirit of the present invention. it should be

Among the accompanying drawings, FIG. 1 is a view showing a fire door assembly according to the present invention. The fire door assembly 100 according to the present invention includes a door frame frame 120 and a fire door 110 .

First, the door frame 120 is installed to be fixed to the edge of the doorway (E) provided on the wall of the compartment.

As can be seen by anyone, the door frame 120 includes upper and lower frames 122 and 124 constructed on the upper and lower portions of the doorway E, and first and second side frames constructed on one side and the other side of the doorway E. (126, 128).

At this time, the upper frame 122 , the lower frame 124 , the first side frame 126 , and the second side frame 128 are installed to be fixed to the doorway E while being connected to each other.

Here, since it is a known technique to fix the door frame 120 to the doorway E, a detailed description thereof will be omitted.

And a striker (not shown) into which a dead bolt (not shown) and/or a latch bolt (not shown) of the door lock assembly (not shown) installed on the fire door 110 is inserted into the first side frame 126 . and a box (not shown) are installed.

Here, installing the striker and the box of the door lock assembly to the first side frame 126 is a known technique, so a detailed description thereof will be omitted.

The fire door 110 is installed in the door frame 120 to open and close the open area formed by the door frame 120 .

To this end, the upper and lower portions of the front (outdoor side) of the fire door 110 connected to the other side of the fire door 110 are the upper and lower frames of the door frame 120 via the upper and lower pivot hinge members 112 and 114 ( 122, 124) pivotally connected.

That is, the fire door 110 opens and closes the open area of the door frame 120 while turning based on a virtual rotation center line (not shown) that vertically connects the rotation centers of the upper and lower pivot hinge members 112 and 114. .

Here, the connection relationship between the fire door 110 and the upper and lower frames 122 and 124 of the door frame frame 120 via the upper and lower pivot hinge members 112 and 114 is a well-known technology, and thus detailed description is omitted. do.

In addition, a door lock assembly (not shown) is installed adjacent to one side of the fire door 110, and the knob of the door lock assembly toward the front and rear (indoor side) sides of the fire door 110 connected to one side of the fire door 110 116) is mounted to be exposed.

Here, the installation of a door lock assembly (not shown) on the fire door 110 is a known technique, and thus a detailed description thereof will be omitted.

Meanwhile, in the accompanying drawings, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 , FIG. 3 is a cross-sectional view taken along line BB of FIG. 1 , and FIG. 4 is an enlarged “C” of FIG. the drawing shown.

2 to 4 , the upper and lower frames 122 and 124 and the first and second side frames 126 and 128 constituting the door frame 120 are bent from a normal cold rolled steel sheet into a desired shape. is formed by

At this time, the upper and lower frames 122 and 124 and the first and second side frames 126 and 128 are in close contact with the rear surface of the fire door 110 when the open area of the door frame 120 is closed by the fire door 110 . Pockets 122a, 124a, 126a, and 128a into which the gasket 140 is fitted are formed to extend along the longitudinal direction of the upper and lower frames 122 and 124 and the first and second side frames 126 and 128, respectively. .

Here, the gasket 140 is in close contact with the rear surface of the fire door 110 when the open area of the door frame frame 120 is closed to block noise and heat transfer between the door frame frame 120 and the fire door 110, and at the same time the door frame frame ( When the open area of 120) is closed, the fire door 110 is buffered.

And when the open area of the door frame 120 is closed, a concave separation preventing groove 130 is formed on the second side frame 128 of the door frame 120 facing the other side of the fire door 110 .

The separation preventing groove 130 is formed on the front side of the pocket 128a to be rotationally symmetrical by 90 degrees with respect to the pocket 128a in a plan view, and is formed to extend along the longitudinal direction of the second side frame 128 .

And the separation prevention protrusion 132 integrally formed on the other side of the fire door 110 enters and exits the separation prevention groove 130 formed in this way.

That is, when the open area of the doorframe frame 120 is closed, the separation prevention protrusion 132 integrally formed on the other side of the fire door 110 is inserted into the separation prevention groove 130 , and is separated when the open area of the doorframe frame 120 is opened. The prevention protrusion 132 is drawn out into the separation prevention groove 130 .

As such, the escape prevention protrusion 132 entering and exiting the separation prevention groove 130 protrudes from the other side of the fire door 110 to the outside of the other side and is formed to extend along the vertical longitudinal direction of the fire door 110 .

At this time, the escape prevention groove 130 is formed to have a depth and a width through which the escape prevention protrusion 132 turning along the fire door 110 can be easily inserted and withdrawn.

As such, the escape prevention protrusion 132 inserted into the escape prevention groove 130 maintains the inserted state in the escape prevention groove 130 even if the fire door 110 thermally expands and deforms during a fire. It is prevented from being separated from the frame 120 .

And when the open area of the door frame 120 is closed, an air layer S is formed between the escape prevention protrusion 132 inserted into the departure prevention groove 130 and the gasket 140 adjacent to it. Do not conduct heat.

In addition, preferably, on one side of the escape prevention groove 130 adjacent to the outdoor side, it is deformed by thermal expansion when a fire occurs and can cushion the separation prevention protrusion 132 that collides with one side of the departure prevention groove 130 . The leaf springs may be installed to be spaced apart from each other at predetermined intervals along the longitudinal direction of the separation prevention groove 130 .

More preferably, the leaf spring may be a shape memory alloy that maintains a flat plate shape at less than 120 degrees Celsius, and whose center is convexly curved toward the escape prevention protrusion 132 when it exceeds 120 degrees Celsius.

In the fire door assembly 100 according to the present invention formed in this way, when the open area of the door frame 120 is closed, the escape prevention protrusion 132 formed on the fire door 110 is on the second side frame 128 of the door frame 120 . Since it is inserted and supported in the formed separation prevention groove 130, even if the fire door 110 is deformed due to thermal expansion in the event of a fire, it is possible to fundamentally prevent the other side of the fire door 110 from being separated from the door frame 120.

In the foregoing, specific embodiments of the present invention have been described and illustrated, but it is common knowledge in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is obvious to those who have Accordingly, such modifications or variations should not be individually understood from the technical spirit or point of view of the present invention, and modified embodiments should be said to belong to the claims of the present invention.

Claims (5)

a door frame frame having upper and lower frames constructed on the upper and lower portions of the doorway, and first and second side frames constructed on one side and the other side of the doorway; and a fire door in which the front upper and lower portions connected to the other side are pivotably connected to the upper and lower frames via the upper and lower pivot hinge members so as to open and close the open area formed by the door frame frame; ,
On the other side of the fire door and the second side frame facing the other side of the fire door, even if the fire door is thermally expanded and deformed in case of a fire, the other side of the fire door is not separated from the second side frame and escape prevention A groove is formed,
The escape prevention protrusion is inserted into the departure prevention groove when the open area formed by the doorframe frame by the fire door is closed, and is drawn out from the departure prevention groove when the open area formed by the doorframe frame is opened,
On one side of the separation prevention groove adjacent to the outdoor side, leaf springs that are deformed by thermal expansion in the event of a fire and cushion the separation prevention projection colliding with one side of the separation prevention groove are provided along the longitudinal direction of the separation prevention groove installed spaced apart,
The leaf spring maintains a flat plate shape when it is less than 120 degrees Celsius, and when it exceeds 120 degrees Celsius, a fire door assembly made of a shape memory alloy whose center is convexly curved toward the escape prevention protrusion.
The method according to claim 1,
The separation prevention groove is formed to extend concavely along the longitudinal direction of the second side frame,
The escape prevention protrusion is formed to extend along a vertical longitudinal direction of the fire door while protruding from the other side to the outside of the other side of the fire door.
The method according to claim 1,
Pockets are formed on the upper and lower frames, and the first and second side frames, into which a gasket in close contact with the rear surface of the fire door is fitted when the open area of the door frame frame is closed;
When the open area of the door frame frame is closed, an air layer for blocking noise transmission and heat conduction is formed between the separation prevention protrusion inserted into the separation prevention groove and the gasket adjacent thereto.



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