KR20150085615A

KR20150085615A - The automatic closing apparatus for a fire door

Info

Publication number: KR20150085615A
Application number: KR1020140005470A
Authority: KR
Inventors: 이한준
Original assignee: 이한준
Priority date: 2014-01-16
Filing date: 2014-01-16
Publication date: 2015-07-24

Abstract

The present invention relates to an automatic closing device for a fire door capable of manually opening and closing a fire door in general, but automatically closing the fire door opened in the fire according to a signal. The automatic closing device for a fire door comprises: a door closer mounted close to the upper end of a door leaf and having a door closer arm horizontally and lengthily extended while applying rotation force in a specific direction; a rail mounted on an inner ceiling part of a door frame close to the place where the door closer is mounted when the door leaf is closed and lengthily extended while having a wider inner width than an entrance; a driving device mounted on the rail to move along the rail and on which the end of the door closer arm is mounted to be rotated; and a fixing device mounted on the window frame to couple with the operation device not to be moved by moving the operation device along the rail according to the opening of the door leaf and separated from the operation device according to an electric signal to close the door leaf according to the operation of the door closer.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic closing apparatus for a fire door,

[0001] The present invention relates to a fire door automatic closing device, and more particularly, to a fire door automatic closing device that is capable of opening and closing a fire door manually at a normal time and automatically closing a fire door opened at the time of a fire, .

The door has a variety of kinds depending on its use, which serves to divide a certain space and allow the space to be moved by a person or an object.

Among them, a fire door separates the inside of the building into a certain area, and when a fire occurs in a certain compartment, the fire and the heat affect the different compartments to prevent the fire from spreading. The most common ones are those in the inter- Or entrance door entrance to the home is a typical fire door.

Such a fire door is required to be installed in preparation for a fire. According to the Fire Service Act, 'the fire door must be installed in the opening for entering and exiting the fire partition wall. It shall be open at any time for the purpose of installation and shall be kept closed at all times and shall be installed so that there is no smoke or flame movement after the door is closed. '

Especially, in terms of maintenance, '1. The automatic closing device installed at the door should not disassemble or interfere with the wedge at the bottom due to obstacles in the passage. 2. When the fuse is installed or controlled automatically by the central disaster prevention unit, it should be inspected from time to time and it should be kept in a state where it is always possible to operate in case of fire. 3. Do not place any obstacle in the fire door opening / closing area. It is.

However, it is possible to manually open the door but it is automatically closed so that it is not kept open. In order to keep the door closed at all times, door closers installed in the door are considerably inconvenient when the door is frequently opened. It is often the case to keep the door open by putting a wedge in the lower part, knowing that it is a situation, and in some cases, it is possible to disassemble a part of the door closer to prevent it from functioning.

The obvious reason for this illegal proceeding is that, in order to make a guest visit at various shops, there is a big difference between the case where the door is closed by a thick fire door and the case where a clean glass door which is separately installed at the inside of the fire door is opened. It is because it is visible.

Therefore, it is necessary to develop a fire door automatic closing device that allows the door to be opened and closed freely in normal times, in particular, to keep the door open, but can be closed automatically in the event of a fire.

(Patent Document 1) Korean Utility Model Registration No. 20-0331691-0000 (October 20, 2003) (Patent Document 2) Korean Patent Registration No. 10-0759713-0000 (September 27, 2007) (Patent Document 3) Korean Patent Registration No. 10-1021339-0000 (March 03, 2011) (Patent Document 4) Korean Published Patent Application No. 10-2011-0036899 (April 12, 2011) (Patent Document 5) Korean Published Patent Application No. 10-2012-0065508 (June 21, 2012)

SUMMARY OF THE INVENTION The present invention has been developed in order to solve the above-mentioned problems, and its object is to open a door freely and to automatically close the door, so that the door can be kept open at a certain angle without any operation or tool, And to develop a fire door automatic closing device which can be automatically closed by a separate signal.

Another object of the present invention is to develop a fire door automatic closing device that allows a user to arbitrarily adjust an angle at which a door is fixed in an open state.

According to an aspect of the present invention, there is provided a door closer comprising: a door closure mounted adjacent to an upper end of a door to mount a door closure arm extending horizontally in a longitudinal direction,

A rail mounted on the inner ceiling of the door frame adjacent to the door closure when the door is closed, the door having a shape in which the inner side is wider than the door;

A movable device mounted on the rail and moving along the rail and the end of the door closing arm being rotatably mounted;

As the door is mounted on the door frame and the door is opened, the movable device moves along the rail to prevent the movable device from moving, so that the connection with the movable device is released according to the electrical signal, And a locking device for closing the door.

In addition, the moving device may include a first fixing bracket that is closely attached to the rail, two to eight wheels that are mounted on the first fixing bracket and inserted and rotate in the rail, A pair of first hinge shafts mounted on the first fixing bracket and a second hinge shaft having one end fixed to the first hinge shaft and extending parallel to the direction of the fixing device, A pair of first fixing pieces mounted on the ends of the first rollers and having a first roller mounted thereon, and a pair of first fixing pieces mounted between the first fixing pieces and having a first roller mounted thereon, A spring;

The fixing device includes a second fixing bracket fixedly mounted on the door frame, a pair of second hinge shafts mounted on the second fixing bracket, and a first roller, The first hinge shaft is rotatably inserted through the first hinge shaft and the second roller is rotatably supported at the other end of the hinge shaft, And a second fixing member to which a rod is inserted between the second rollers so that a portion where the latching portion of the second fixing member is located when the first roller is entered does not open, The first roller is separated from the second roller so that when the first roller is released, And a lenoid valve.

The door closing arm may include a first door closing arm having a long slot extending in the longitudinal direction and one end of which is rotatably mounted with the fixing device. The first door closing arm is installed at one side of the door closer and at the other side of the first door closing arm, And a second door closing arm which is fixed to the long hole by a fixing bolt so as to be moved in the same straight line so as to change the length of the door closing arm according to the position.

As described above, according to the present invention, the door can be opened automatically when the door is opened to a certain extent by keeping the door closed, And at the same time, when the fire occurs, it is possible to perform the function of the fire door by the function of the door closeer by the signal.

In addition, the user can arbitrarily and easily adjust the opening angle of the door for locking the door by adjusting the length of the door closing arm, thereby adjusting the angle at which the door is opened and fixed depending on the situation.

Figure 1 is a perspective view of an embodiment of the present invention.
2 is a partially exploded perspective view of an embodiment of the present invention.
Figure 3 is an exploded perspective view in accordance with an embodiment of the present invention.
4 to 7 are conceptual diagrams illustrating a process of being fixed by a fixing device according to an embodiment of the present invention.
8 is a conceptual diagram illustrating a state of detaching from a fixing device according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a partially exploded perspective view according to an embodiment of the present invention. FIG. 3 is an exploded perspective view according to an embodiment of the present invention, and FIGS. 4 to 7 FIG. 8 is a conceptual diagram illustrating a state of detaching from a fixing device according to an embodiment of the present invention. Referring to FIG.

The basic structure of the present invention according to the drawings is a door closure 2 mounted adjacent to an upper end of a door 1 and equipped with a door closure arm 21 extended horizontally while a rotational force acts in one direction;

A rail 4 which is mounted on an inner ceiling portion of the door frame 3 adjacent to the door closure 2 when the door 1 is closed and has a shape in which the inside is wider than an entrance,

A movable device 5 mounted on the rail 4 and moving along the rail 4 and the end of the door closing arm 21 being rotatably mounted;

The movable unit 5 is moved along the rail 4 as the door 1 is opened and the door unit 1 is mounted on the door frame 3 so as not to move in conjunction with the movable unit 5, And a fixing device 6 for closing the door 1 according to the operation of the door closer 2 by releasing the engagement with the device 5. [

If it is assumed that the movable unit 5 moves along the simple rail 4, the door closer 2, the rail 4 and the movable unit 5 are configured to automatically close mainly the light wooden doors It is a well-known technology that has already been used in devices.

The reason for this is that the configuration is added to the movable unit 5 so that when the door is opened 180 degrees or 90 degrees according to the building structure, the additional fixed unit 6 is fixed to the stationary unit 5 by fixing the movable unit 5, And a sensor or an administrator for detecting the occurrence of a fire sends a signal to the fixing device 6 to unlock the bite movable device 5 so that the door closing device 2 is operated to prevent the spread of fire The fire door is functioning as it is, and when it is not a fire situation, it can be fixed with the door open as needed.

The movable unit 5 includes a first fixing bracket 51 which is in close contact with the rail 4 and a second fixing bracket 51 which is fitted to the first fixing bracket 51 and inserted into the rail 4, A door closure arm fixing part 53 mounted on the first fixing bracket 51 and rotatably mounted on the door closing arm 21, A pair of first hinge shafts 54 mounted on the first hinge shafts 51 and one end of which is fixed to the first hinge shafts 54 and extended in parallel to the fixing device 6, A pair of first fixing pieces 56 to which the first roller 55 is mounted and elastic restoring forces for forces that are mounted between the first fixing pieces 56 and are attached to the first roller 55, And a compression coil spring 57 for causing the compression coil spring 57 to move.

Here, the wheels 52 are made to move while minimizing the friction in the rail 4, so that the wheels 52 are brought into close contact with both sides of the rails 4 inserted into the rail 4 and the cracks of the rail 4, Two wheels 52 can be mounted.

The door closure arm fixing part 53 for fixing the door closing arm 21 may be constructed to perform a known function together with the wheel 52 and the first fixing bracket 51 And the first hinge axis 54, the first roller 55, the first fixing piece 56, and the compression coil spring 57 are configured to impart the above-described added functions of the present invention.

The fixing device 6 corresponding to the movable device 5 includes a second fixing bracket 61 fixedly mounted on the door frame 3 and a pair of second hinges 61 mounted on the second fixing bracket 61. [ The first roller 55 and the second roller 55 pass through an inclined surface 631 and an inclined surface 631 that allow the first rollers 55 to move away from each other due to pressure while the first roller 55 enters the first roller 55, And a second roller 633 is mounted at the other end of the latching part 632. The second roller 633 is mounted on the other end of the latching part 632 so that the first hinge shaft 62 passes through the latching part 632, A pair of second fixing pieces 63 and a rod 641 are inserted between the second rollers 633 so that when the first roller 55 enters, The rod 641 is separated from the second roller 633 by an external signal so that the portion where the first roller 632 is located is not opened, And a solenoid valve (64) for releasing the first roller (55) when a portion of the second fixing piece (63) where the latching part (632) is located is opened when the roller (55) is released.

The operation of the present invention according to the above-described construction is such that when the door 1 is first opened, the movable device 5 moves along the rail 4 and the door closes 2 by the door device 2 The first roller 55 is moved to the inclined plane 631 of the fixing device 6 when the angle of opening the door 1 is more than a certain degree, .

The first roller 55 rotates about the first hinge axis 54 so that the first roller 55 rotates along the slope 631 without friction so that the gap between the both rollers becomes narrower to pass through the slope 631 And passes through the inclined surface 631 and then is seated in the latching portion 632. [

At this time, the shape of the latching portion 631 is determined so that the force acting on the door closer 2 is smaller than the force for rotating the first fastening piece 56 without external force, And when the door is to be closed again, the force applied by the door closer 2 is added to the force of the user, so that the door is closed.

Therefore, the manufacturer can determine the shape of the inclined surface 631 and the engaging portion 632 by considering the force generated by the door closure 2, the weight of the door 1, and various requirements that may occur, It should be designed in consideration of the elasticity of the compression coil spring 57 and the like.

When a fire occurs when the door 1 is kept open, the rod 641 of the solenoid valve 64 is separated from the second roller 633 by a sensor for detecting a fire or a separate user signal system The second fixing piece 63 can be easily rotated around the second hinge axis 62. The second fixing piece 63 can be easily rotated about the second hinge axis 62 and is released from the fixing device 6 by a force generated from the door closing member 2, To be closed.

The solenoid valve 64 is mounted to the solenoid valve 64 so that the solenoid valve 64 can be returned to the second roller 633 when the external signal disappears. The solenoid valve 64 is rotated by the spring 642 by the flange 642, 643 push the rod 641 in the direction in which it is inserted between the second rollers 633.

In the present invention, the door closer arm (21) is provided with a first door closing arm (212) having a long hole (211) extending in the longitudinal direction and having one side rotatably mounted to the fixing device (6) And the other side is fixed to the long hole 21 by the fixing bolt 213 so as to be superimposed on the same straight line with the first door closing arm 212, And a second door closing arm (214) for changing the length of the door (21).

The length of the door closing arm 21 when the movable device 5 moves by the door closing arm 21 and engages with the fixing device 6 determines the opening angle of the door 1, The user can adjust the length of the door closing arm 21 by adjusting the length of the door closing arm 21 so that the door can be opened and fixed 180 degrees when the door is closed, So that it is possible to easily determine the angle at which the stationary member 1 is fixed after it is opened.

In this case, the door can also be prevented from opening.

1: door
2: Door Closer
21: Door closer arm
211: Slot 212: 1st door closing arm
213: fixing bolt 214: second door closing arm
3: Door frame
4: Rail
5: Movable device
51: first fixing bracket 52: wheel
53: Door closure lock fixing part 54: First hinge shaft
55: first roller 56: first fixing piece
57: Compression coil spring
6: Fixing device
61: first fixing bracket 62: second hinge shaft
63: second fixing piece
631: inclined surface 632:
633: Second roller
64: Solenoid valve
641: Load 642: Flange
643: spring

Claims

A door closure 2 mounted adjacent to an upper end of the door 1 and mounted with a door closure arm 21 extending horizontally and extending in a direction of a rotational force;
A rail 4 which is mounted on an inner ceiling portion of the door frame 3 adjacent to the door closure 2 when the door 1 is closed and has a shape in which the inside is wider than an entrance,
A movable device 5 mounted on the rail 4 and moving along the rail 4 and the end of the door closing arm 21 being rotatably mounted;
The movable unit 5 is moved along the rail 4 as the door 1 is opened and the door unit 1 is mounted on the door frame 3 so as not to move in conjunction with the movable unit 5, And a fixing device (6) for releasing the engagement with the device (5) and closing the door (1) according to the operation of the door closer (2).

2. The apparatus according to claim 1, wherein the movable device (5) comprises a first fixing bracket (51) closely attached to the rail (4) A door closure arm fixing part 53 mounted on the first fixing bracket 51 and rotatably mounted on the door closing arm 21, A pair of first hinge shafts 54 mounted on the first hinge shafts 51 and one end of which is fixed to the first hinge shafts 54 and extended in parallel to the fixing device 6, A pair of first fixing pieces 56 to which the first roller 55 is mounted and elastic restoring forces for forces that are mounted between the first fixing pieces 56 and are attached to the first roller 55, And a compression coil spring (57) for bringing the compression coil spring
The fixing device 6 includes a second fixing bracket 61 fixedly mounted on the door frame 3, a pair of second hinge shafts 62 mounted on the second fixing bracket 61, After the position of the first roller 55 is restored after passing through the inclined surface 631 and the inclined surface 631 which cause the first rollers 55 to move away from each other due to the pressure when the first roller 55 enters, And a second roller 633 is mounted on the other end of the second fixing piece 633 so as to be rotatable through the first hinge shaft 62. [ 63 and the rod 641 are inserted between the second rollers 633 and the portion where the latching portion 632 of the second fixing piece 63 is located when the first roller 55 enters, And when the first roller (55) is disengaged by releasing the rod (641) between the second rollers (633) by an external signal, The automatic closing device, characterized by consisting of a solenoid valve 64 to the portion where the engaging portion 632 of the piece 63 in beoleojyeo to exit the first roller (55).

3. The door locker according to claim 1 or 2, wherein the door closer arm (21) has a long hole (211) extending in the longitudinal direction and a first door closer arm And the other side is fixed to the elongated hole 21 by the fixing bolt 213 while the other side is overlapped with the first door closing arm 212 in the same linear direction And a second door closing arm (214) for changing the length of the door closing arm (21) according to the position of the second door closing arm (214).