KR200301004Y1 - fire door closer - Google Patents

Abstract

The present invention relates to an automatic fire door decompressor that automatically closes an open fire door in order to block the propagation of fire. In particular, the fire door is automatically closed by a smoke detection signal that detects the fire first.

A fire door is installed at the entrance of a high-rise residential building or commercial building to block the propagation of fire. It is normally closed but can be seen to be open for inconvenience.

The present invention is to close the fire door by operating the door closer attached to the upper side of the door (fire door), and has a motor and a reducer to operate by the fire signal, and has an operating mechanism acting by the power transmission shaft of the reducer, When the moving tool moves forward and backward, when the operation guide and the left and right operation frame are released, the elastic force of the elastic piece under the support bolt is released when the support bolt held by the operation frame is released and raised. Releases the pressing force of the stopper, which keeps the door open, so that the fire door is closed by the door closer.

Description

Smoke door closer

The present invention relates to an automatic fire door unlocker that automatically closes an open fire door to block the propagation of the fire. In particular, the fire door is automatically closed by the smoke detection signal, which is the first fire detection signal detected during a fire, to close the fire door. It relates to a smoke detection door (fire door) decompressor.

In general, a spring hydraulic door closing device called "door closer" is installed to automatically close the opened door, and the door is automatically closed. The door closer is constructed between the door and the door frame to press the fluid and the spring to the inside of the compartment inside the door closure body when the door is opened so that the elastic force is applied, if the door is closed inside the door closer body The fluid moves to the other compartment to release the spring force and closes the open door automatically, and the movement of the fluid gradually closes the door closing speed.

Such a door closer has a stopper means for keeping the open door in an open state, and when the door is closed by applying force, it can be seen that the door is closed by the door closer.

In general, the main function of the door closer has a function of closing the opened door slowly, but some fire door door closers have a stopper means for keeping the open fire doors open, and the stopper means has opened the fire door by melting the fuse by heat You can see the door closer for the fire doors to close.

The fire door closer has a stopper that keeps the door open when the fuse melts and escapes due to the heat generated by the fire. Conventional fireproof door closers that automatically shut off the door by the pressure of the door closer by releasing the pressure are disclosed in Korean Laid-Open Publication Nos. 86-2861 and 87-13623 and Korean Laid-Open Publication Nos. 94-1273 and Utility Model Registrations 20 Can be viewed as -279549.

Such a fire door closer according to the prior art, that is to operate the fire door automatically in case of fire to close the open door to block the propagation of the fire is due to the heat generated by the fuse of the door closer of the open door When it melts, the fire door is operated and closed. When the heat is applied until the fuse is melted on the door closer arm attached above the fire door, it is almost the end of the fire. It can be seen that the fire doors have been operated, failing to faithfully fulfill the basic objectives for early fire evolution.

The present invention is conceived to solve this problem in consideration of the fact that the fuse door closure of the fuse type that melts by the heat generated in the conventional fire operation to close the door practically does not close the fire door quickly at the beginning of the fire.

In the fire generated during a fire, smoke including heat and toxic gas is generated, and the damage caused in the fire can be seen that asphyxiation by smoke including toxic gas occurs first rather than heat damage.

Therefore, it can be seen that the high-rise building has a smoke control system that blocks the smoke generated during the fire from propagating throughout the building.

The smoke control system includes an air supply device that detects smoke generated in a fire and supplies fresh air to an emergency passage provided with an evacuation stairway, and increases the air pressure at the place where the fire is generated, It prevents the escape and propagation throughout the building.

In the case of a fire, such a smoke control system automatically blocks the fired area by a fire door and increases the air pressure of all rooms in front of the evacuation stairs rather than the air pressure of the place where the outside air flows from outside the fire. However, if the open fire door cannot be closed, if heat and smoke enter the evacuation stairs through the open fire door, the air escapes and the original smoke control system becomes useless, rather the open fire door. As a result, the smoke generated during the fire escapes and the entire evacuation stairs are covered with smoke including toxic gases.

In other words, the fire doors should be operated automatically by the fire signal to close the doors that are open.However, all fire doors developed at present have a structure in which the fuse is melted by the heat generated during the fire to close the fire doors. It can be seen that it does not perform the original function at all to prevent the propagation of.

The present invention was devised to solve this problem. The present invention prevents rapid propagation of fire by operating the fire door automatically or manually by various fire detection signals that detect it in case of fire to close the fire door in the open state, and occurs in case of fire. It is to prevent smoke from suffocating by blocking the propagation of smoke including toxic gas, and to close the fire door which is opened by fire signal automatically to the door closer attached to the door for the purpose of closing the door. It is to provide the detection door (fire door) releaser.

The present invention, as described above, can be seen that fire doors that are automatically closed in a conventional fire and block fire compartments are operated by fuses melted by heat. After the fire is sufficiently developed, the fire door is operated and closed, and the present invention was devised in consideration of the fact that the fire door could not be faithfully performed.

That is, the present invention is equipped with a door closer operation means for operating the door closure which is normally attached to the top of the door and automatically closes the open door by a fire signal generated in the event of a fire. In addition to the flames generated in case of fire, smoke and toxic fumes are to be blocked at an early stage.

To this end, the present invention includes an operation mechanism that operates by a signal generated in a fire in a conventional door closer, and the operation mechanism releases the stopper fixing means for maintaining the open state of the fire door so that the fire door is automatically closed. It has a structure.

1-Schematic assembly plan view showing that the present invention is installed in the fire door closer.

Figure 2-Assembly plan view showing the present invention installed in the door closer for fire doors.

Figure 3-Assembly cross-sectional view of the present invention installed in the door closer for fire doors.

4-A cross-sectional view of the present invention.

Figure 5 is a cross-sectional plan view before operation of the present invention.

Figure 6-Cross-sectional plan view after operation of the present invention.

Figure 7 is a cross-sectional plan view before operation of another embodiment of the present invention.

8 is a cross-sectional plan view after operation of another embodiment of the present invention.

A normal door closer 101 is attached to an upper end of the door (fire door) 100, and the door (fire door) 100 opened to the door closure body 102 maintains its open state until closed by applying a constant force. The disk 104 having a plurality of fastening holes 105 for fixing the stopper 103 is fastened and fixed to the hinge shaft 106 of the door closer body 102 by the stopper means. On one side of the driving arm 107 to be fastened, a roller support shaft having a roller 109 downwardly pressing the stopper 103 fastened to the fastening hole 105 on the disc 104 to fix the door ( 108 has a roller support shaft fitting hole 110 into which the roller support shaft 108 is fitted, and an elastic piece fitting groove 112 into which an end of the elastic piece 111 is inserted at the upper end of the roller support shaft 108. Support bolt 113 for pressing the roller support shaft 108 by pressing the elastic piece 111 in the middle portion of the) In the door closer 101 having a door stopper means, the case 11 is attached to the lower side of the drive arm 107 has a power generating unit consisting of a motor 12 and a reducer 13, the reducer ( The power shaft of the 13) is composed of a screw shaft, the screw power shaft 14 is screwed to the center of the operating port, screwed to the center of the operating port 21, the operating port 21 The left and right actuating guides 23A and 23B are coupled to both ends of the pins 25A and 25B, respectively, and the other ends of the right and left actuating guides 23A and 23B are also the respective pins 26A and 25B. 26B) is coupled to the left and right operating frames 27A and 27B, and the left and right operating frames 27A and 27B have semicircular grooves facing each other, and each semicircular groove has a respective semicircular spacing ring 29A. (29B) is fitted and fixed to support the elastic piece 111 between the semi-circular spacing rings (29A, 29B). The inclined bolt head 113A of the support bolt 113 and the washer 31 having the inclined surface are fitted, and the other end portions 28A and 28B of the left and right operating frames 27A and 27B are respectively To be coupled to the left and right fixing plate side pins 32A, 32B of the fixing plate 32 fixed to the case 11, so as to have the first and second limit switches 41 and 42 below the operating port 21. It is.

In addition, in another embodiment of the present invention, the fixing plate 32 fixed to the case 11 and the other end 28A, 28B and left and right operating frames 27A, which are retained by the fixing plate side pins 32A, 32B. 27B) are constituted by separate parts, and are connected to each other by light metal materials (fuses) 35A and 35B which are easily melted by heat therebetween, and between the light metal materials (fuses) 35A and 35B. It is to have a structure in which the tan ball spring 36 is fitted.

Before looking at the present invention having such a configuration in more detail look at the operation of the door closer for the fire door is installed in a normal fire door to automatically close the fire door opened in the fire.

The door closer body 102 is attached and fixed to the upper end of the fire door 100, and the end of the driving arm 107 of the door closer is fixed to the door frame 121.

In addition, the disc 104 which is integrally attached to the door closer body 102 has a plurality of fastening holes 105, and a stopper 103 fastened by bolts is attached and fixed thereto.

The stopper 103 attached to the disc 104 on the door closer is fastened to an arbitrary hole of the plurality of fastening holes 105 of the disc 104 with bolts according to the opening angle of the fire door 100.

As such, the stopper 103 fixed to an arbitrary position among the plurality of fastening holes 105 on the disc 104 is pressed by the elastic piece 111 supported by the support bolt 113 penetrated by the driving arm 107. The roller support shaft 108 of the roller support shaft 108 is in contact with the roller 109 to maintain an open state, and the roller of the roller support shaft 108 pressed by the elastic piece 111 before closing by applying force to the fire door 100. 109 maintains an open state because it maintains a pressure-junction state with the stopper 103.

Such a conventional fire door (100) is a means for automatically closing the fire door in the case of fire, the fuse is provided below the support bolt 113 to press the elastic piece 111 heat generated during the fire heat melt the fuse When the support bolt 113 is raised to operate, the rising support bolt 113 removes the elasticity of the elastic piece 111 in a pressurized state to press the pressing force of the roller support shaft 108 pressurized by the elastic piece 111. It can be seen that the fire door 100 is closed by the operation of the door closer 101 when released.

As described above, the door closer for the fire door is attached to the conventional fire door 100 to automatically close and operate the fire door 100 in case of fire. When the fuse melts due to heat generated in the fire, the fire door is closed and the fire door is automatically fired immediately. You can see that it doesn't close.

In other words, when the fire proceeds enough to melt the fuse by the heat generated during the fire, it is pointed out that the fire door cannot be faithfully executed because the fire door cannot be closed at the beginning of the fire due to the middle of the fire or the end of the fire. .

The present invention has been devised to solve the problem in consideration of the above, and the present invention is intended to provide various fire detection signals, such as smoke detection signals and heat detection signals, which detect them when a fire occurs, or manual fire signals that notify them when a fire occurs. By closing the fire door in the open state by automatically to prevent the rapid propagation of fire, look at the operation of the present invention as follows.

The present invention is operated by the fire detection signal detected by an automatic re-detection signal by a smoke detection sensor or a heat detection sensor that detects smoke generated by a fire or a manually operated fire alarm signal. To close it automatically.

Looking at the operation of the present invention as follows.

When power is applied to the motor 12 of the present invention by a fire signal, the screw power shaft 14 of the reducer 13 is rotated, and the rotating screw power shaft 14 is an operating mechanism for screwing them together. The 21 moves forward. The forward-moving operating tool 21 forwards the left and right operating guides 23A and 23B, which are left and right pins 25A and 25B, respectively, and moves forward and backwards to the right and left operating guides 23A and 23B. At the other end of the left and right out and at the same time open the left and right motion frame (27A, 27B) left by pins (26A, 26B).

The left and right motion frames 27A and 27B, which are opened out by the operating guides 23A and 23B, support bolts 113 that are supported by opening a space between the semicircular spacing rings 29A and 29B respectively fitted into the semicircular grooves therein. By moving forward the inclined bolt head 113A of the ()) to remove the elastic force of the elastic piece 111 of the end of the support bolt 113.

That is, the inclined bolt head 113A of the support bolt 113 inserted into the semi-circular groove of the left and right motion frames 27A and 27B is moved up and down by the gap of the semi-circular groove, and the supporting bolt 113 is moved upward. The elastic force of the elastic piece 111 above the arm 107 is attenuated, and the elastic attenuation of the elastic piece 111 is applied to the pressing force of the roller support shaft 108 maintained by the end of the elastic piece 111. Since it is released, the roller support shaft 108, which is pressed by the roller support shaft 108 and is maintained in the stop state, the coupling between the stopper 103 is released, the fire door 100, that is, the door is a door closer 101 Will be closed.

As such, the present invention maintains the open state by the stopper means of the door closer 101 by operating the motor 12 by applying power to the motor 12 by a smoke detection signal for detecting a fire at the beginning of the fire. It automatically closes the fire door to block the rapid spread of fire.

The motor 12 of the present invention operates the present invention by driving the motor 12 by an automatic material detection signal that detects this in case of fire, that is, a smoke detection signal that operates first in case of fire, thereby automatically closing the fire door.

In this way, when the power is applied to the motor 12 by the fire detection signal to rotate the screw power shaft 14 of the reducer 13 to move the actuator 21 forward, the first limit below the actuator 21 is moved. The switch 41 is operated to monitor the operation of the operating port 21. When the operating port 21 operates the second limit switch 42, the power applied to the motor 12 is cut off, and thus the motor 12 By stopping the rotation of the) will stop the further movement of the operating port (21).

When the operation port 21 operates the second limit switch 42 to stop the rotation of the motor 12, the left and right operation frames 27A and 27B are spread out from the left and right to support the support bolts supported by the inner semicircular grooves ( This corresponds to the case in which 113 is raised to release the elasticity of the elastic piece 111.

The present invention is to close the fire door in the open state because the power is applied to the motor 12 by the smoke detection signal which is a fire detection signal when the fire occurs to move the operating port 21, the present invention is not only during the fire In order to check the operation, when the power is arbitrarily applied to the motor 12, the open fire door is closed.

In this way, if you want to return to the original state after the fire extinguishing or arbitrarily operated the present invention, if the power is applied to the motor 12 again, the motor 12 is reversed to reverse the operating port 21, the operation is reversed The sphere 21 moves until the first limit switch 41 is operated, and then the motor 12 is stopped, and the left and right operation frames 27A and 27B, which are opened by the retracting operation sphere 21, return to their original positions. When the semi-circular spacing ring (29A) (29B) fixed to the semi-circular groove is narrowed by pressing the inclined bolt head 113A to pull the support bolt 113, the elastic piece (111) fitted to the end of the support bolt 113 ) Will restore elasticity.

As such, the present invention operates the present invention by rotating the motor 12 by applying power to the motor 12 by a fire signal in the event of fire, but in the case of no power being supplied in case of fire, means for blocking the fire door by heat. Will have

That is, the other side end portion 28A (28B) of the left and right operation frame remaining with the fixing plate 32 and the fixing plate side pins (32A, 32B) fixed to the case 11 and the fixing plate side pins (32B) as in another embodiment of the present invention After the operation frame (27A) (27B) constitutes a separate component from each other, it is connected to each other by light metal material (fuse) 35A (35B) that is easily melted by heat therebetween, the light metal material (fuse) 35A When constructing the present invention with the structure of sandwiching the carbon spring (36) between the (35B), the heat generated in the fire is connected to the left and right operation frame (27A) (27B) and its other end (28A) (28B) When the light metal (fuse) 35A (35B) is heated and melted, the light metal (fuse) 35A (35B) is separated by the ball spring 36, and the left and right operating frames 27A and 27B are opened. The support bolt 113 is to be raised, and the support bolt 113 to be lifted releases the elastic force of the elastic piece 111 so that the fire door is closed.

As such, the present invention operates automatically by a fire signal in case of fire, and closes the fire door. The fire door that is not closed is automatically closed by heat melting fuse as seen in the conventional fire door closing means.

In the fire generated during the fire of the building, a large amount of smoke containing toxic gas is generated, and it can be seen that the smoke propagates to the evacuation stairs and the entire building before the flame.

Therefore, the building will have a smoke removal facility to block the smoke generated in the fire, the smoke removal facility can be seen to operate by the smoke detection detector.

This design blocks the propagation of fire in case of fire and automatically opens the fire door when the smoke is detected by the detector before closing the fire door which is installed to secure the evacuation stairs. It is a very useful design that closes the flames, and of course, blocks the smoke and helps the fire extinguish quickly, and prevents suffocation by the toxic gas contained in the smoke.

Claims (2)

A normal door closer 101 is attached to an upper end of the door (fire door) 100, and the door (fire door) 100 opened to the door closure body 102 maintains its open state until closed by applying a constant force. The disk 104 having a plurality of fastening holes 105 for fixing the stopper 103 is fastened and fixed to the hinge shaft 106 of the door closer body 102 by the stopper means. On one side of the driving arm 107 to be fastened, a roller support shaft having a roller 109 downward to press the stopper 103 fastened to the fastening hole 105 on the disc 104 to secure the door ( 108 has a roller support shaft fitting hole 110 into which the roller support shaft 108 is fitted, and an elastic piece fitting groove 112 into which an end of the elastic piece 111 is inserted at the upper end of the roller support shaft 108. Support bolt 113 for pressing the roller support shaft 108 by pressing the elastic piece 111 in the middle portion of the) In the door closer (101) having a door stopper means having a power generating unit composed of a motor (12) and a speed reducer (13) on one side of the case (11) attached below the drive arm (107), and the speed reducer ( The power shaft of the 13) is composed of a screw shaft 14, the screw power shaft 14 is screwed to the center of the operating port, screwed to the center of the operating port 21, the operation Both ends of the sphere 21 are coupled to the left and right operating guides 23A and 23B with respective pins 25A and 25B, and the other ends of the left and right operating guides 23A and 23B are also provided with respective pins ( 26A) and 26B are coupled to the left and right operating frames 27A and 27B, and the left and right operating frames 27A and 27B have semicircular grooves facing each other, and each semicircular groove has a respective semicircular spacing ring. (29A) and (29B) are fitted and fixed to support the elastic piece (111) between the semi-circular spacing rings (29A, 29B). The inclined bolt head 113A of the supporting bolt 113 and the washer 31 having the inclined surface are fitted therein, and the other end portions 28A and 28B of the left and right motion frames 27A and 27B, respectively. Is coupled to the left and right fixing plate side pins 32A and 32B of the fixing plate 32 fixed to the case 11, and the first and second limit switches 41 and 42 are disposed below the operation port 21. Smoke detection door door locks characterized in that it has. The fixing plate 32 fixed to the case 11, the other end 28A, 28B and left and right operating frames 27A and 27B which are retained by the fixing plate side pins 32A and 32B. Le constitutes a separate part from each other, it is connected to each other by the light metal material (fuse) 35A (35B) that is easily melted by heat therebetween, and the ball spring between the light metal material (fuse) 35A (35B) A smoke-sensing door release device characterized in that it has a structure to which 36 is inserted.