KR100491383B1 - Fire-do0r release apparatus - Google Patents

Abstract

The present invention is a fire door automatic unlocking device, comprising a fixed body provided on the side wall of the fire door and the locking body is installed on the fire door, the fixed body is fastened to the drive shaft of the reduction motor and mounted on the support plate by fastening the driving coupling rod And the locking body is configured to be assembled in the coupling tube formed with the coupling groove and the locking protrusion rod through the support shaft installed in the fire door, so as to drive the reduction motor according to the manual adjustment and electrical control of the user. By this, the driving coupling rod of the fixed body is selectively fitted to the coupling pipe coupling groove of the locking body and the locking operation of the locking bar to be caught by the locking piece and vice versa.

Description

Fire door automatic unlocking device {FIRE-DO0R RELEASE APPARATUS}

The present invention relates to a fire protection system, and more particularly, to an improvement of an automatic fire door release device.

In order to prevent the spread of fire in buildings, the firefighting laws are required to install fire doors in special evacuation stairs or emergency lift platforms. Fire doors are equipped with automatic door closing devices, such as door closers or auto hinges, to prevent the spread of fire in the event of fire, and automatic door locks are installed on the fire door itself or on the side walls of the fire doors. Fire door automatic unlocking device performs the function of keeping the door open normally and the fire door in the open state is locked by a predetermined control in the event of a fire.

Fire doors equipped with automatic door closing device and automatic door unlocking device are normally kept open.In the event of a fire, the fire door automatic unlocking device is activated by the fire detector to cancel the door lock status and the door automatic closing device The fire door is closed by the closing force to prevent the spread of smoke and toxic gases or flames caused by the fire. The fire doors should be kept closed but never locked. The evacuators can then push the fire door open and safely escape through the emergency exit, and the fire door opened by the evacuator is closed again by the closing force of the automatic closing device such as the door closer, which still prevents the spread of smoke or flame. Can be.

There are various kinds of fire door automatic unlocking devices, but they are classified into mechanical and electric type. Electric type includes magnet type and solenoid type depending on the operation method.

The magnetic fire door automatic unlocking device is a permanent magnet and its operating type is energized operation. For example, the suction force is about 10kg · f, the rated voltage is DC 24V, and the rated current is about 800mA. In addition, the solenoid fire door automatic unlocking device releases the hook by solenoid operation. The operating voltage is DC 24V, the operating current varies depending on the manufacturer, but is about 200 to 400 mA and the adsorption force is about 30 ± 5 kg · f.

An example of a solenoid fire door automatic unlocking device is a hook & letch door release of model S-200 of SNC Metal. The annular door release with model name S-200 has a working voltage of DC 24V ± 20%, an operating current of 350mA ± 20%, and a bearing capacity of 25 ± 3 kg · f but adjustable from 15 to 70 kg · f. And the reactivation prevention method to prevent relocking uses a mechanical method. The mechanical reactivation prevention method has recently been adopted in the above-mentioned model name S-200, which is rarely implemented in other models.

In case of adopting solenoid type fire door automatic unlocking device, guarantee power control means for controlling the guarantee power according to the size of fire door and the closing force of the automatic closing device is required, and means for preventing re-locking are needed. It also requires several hundred mA of operating current to release the hooks that it is holding.

In order to ensure that the solenoid fire door automatic unlocking device satisfies all requirements, manufacturing costs are increased and manual jamming is impossible or even difficult, but it is very difficult. In addition, the most sensitive consideration in the fire-fighting equipment company is the current consumption, and if a current of several hundred mA is used to operate one fire door, the operation of other fire-fighting devices is also taken into consideration, which requires a large capacity battery. Since batteries are consumable and expensive, the capacity of the battery has a large effect on the product cost.

Therefore, a low cost of manufacturing, high reliability, low current consumption, manual jamming and evacuation during evacuation, as well as a simple fire door automatic unlocking device was required.

Accordingly, an object of the present invention is to provide a fire door automatic unlocking device having a low manufacturing cost and excellent reliability.

Another object of the present invention is to provide a fire door automatic unlocking device which is operable with a small current consumption and also has a manual locking release control.

Still another object of the present invention is to provide a fire door automatic unlocking device having a secure door locking force, a re-locking prevention function, and a simple structure regardless of the size or weight of the fire door.

Another object of the present invention to provide a motor fire door automatic unlocking device.

Another object of the present invention is to provide a fire door automatic unlocking device that can be implemented as a small motor at the same time while driving low current while satisfying the fire-related rated voltage regulations.

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In accordance with the above object, the present invention provides a fire door automatic unlocking device comprising: first and second fixtures provided on each of first and second fire door sidewalls of a double door structure, and first and second fire doors. , The second locking body, but the first and second locking body of the first and second locking body is fitted to the adjusting shaft coupling tube of the first and second locking body is rotated by the first and second reduction gears to be made at the same time. Make up,

As the starting voltage is supplied by the fire detection, the first locking body is released by the rotation of the first reduction motor, and then the driving of the first reduction motor is stopped and the second locking body is released by the rotation of the second reduction motor. Characterized in that the circuit portion to be made.

In the present specification, the "automatic fire door release device" is a device that keeps the fire door in a locked state in a fire door open state and, in a predetermined lock release control, makes it possible to release the door of the open fire door. Define as a device to perform.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same elements in the figures are represented by the same numerals wherever possible. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

Fire door automatic unlocking device according to an embodiment of the present invention is a motor-type fire door automatic unlocking device, it is possible to prevent the re-locking in the evacuation and manual closing of the power supply, and also includes a feature that can drive the motor with a relatively low current consumption. .

In the embodiment of the present invention to be described later will be mainly described as an example of applying a double-door fire door and 12 volt to 24 volt DC motor for convenience of understanding, it should be noted that the present invention is not limited thereto.

1 and 2 are installed state diagram of the automatic fire door release device according to an embodiment of the present invention, Figure 1 is an external view, Figure 2 is a cross-sectional view.

Figure 3 is an exploded perspective view of the automatic fire door unlocking device according to an embodiment of the present invention, Figure 4a is a perspective view of the main portion of the automatic fire door unlocking device 10 according to an embodiment of the present invention, Figure 4b is It is sectional drawing of the fixing plate 24. And, Figure 5 is a side cross-sectional view when the automatic fire door unlocking device 10 is locked.

1 and 2 show fire doors 2a and 2b having a double door structure as an example.

Fire doors (2a, 2b) of the double-door structure is provided to open from the inside to the outside according to the fire-related laws, each of which is provided with automatic door closing device (4a, 4b) such as door closer or auto hinge. The door automatic closing devices 4a and 4b shown in Figs. 1 and 2 hold the door closer as an example.

When opening the fire door, the second fire door (2b) of the double door structure doors (2a, 2b) must be opened first, and then the first fire door (2a) must be opened. The door is closed properly when it is closed. That is, the first fire door 2a should be closed first, and then the second fire door 2b should be closed. The circuit unit (FIGS. 8A to 8C) according to the embodiment of the present invention smoothly performs this priority operation. This prevents a gap between the first fire door 2a and the second fire door 2b and prevents smoke or toxic gases from leaking into the gap.In terms of circuits, the first and second fire doors 2a and 2b Since the lock release is performed in sequence, there is an advantage that the load can be reduced to about half of the load during simultaneous driving.

Fire door automatic unlocking device 10 according to an embodiment of the present invention, the fixing body 12 is largely installed on the side wall 6 of the fire door (2a, 2b), and the locking body is provided on each of the fire door (2a, 2b) It consists of (14), but the locking mechanism coupled to the adjusting body coupling body 66 of the locking body 14 is fitted to the drive shaft rotated by the reduction motor 30 of the fixed body 12, and the locking is made at the same time, The gist of the present invention is configured to be released by the rotational drive of 30).

As shown in Figure 1, the height of the fixed position 12 and the locking body 14, the height of the handle position provided in the general door is appropriate.

Referring to the configuration of the automatic fire door automatic unlocking device 10 according to an embodiment of the present invention in more detail.

The installer installs the fixing body 12 in the square groove formed in advance in accordance with the fire-related standards on the outer side wall (6). If the square groove is not formed, the installer forms the side wall 6 by drilling. The fixed body 12 may be installed to be completely embedded in the square groove depending on the state of the fire doors (2a, 2b), or may be brought out to some extent. Surface height adjustment of the fixture 12 can be adjusted using three surface height adjustment bolts 40 fastened to the upper and lower portions of the bracket 20 shown in Figure 4a. It is to be understood that the height adjustment configuration using the surface height adjustment bolt 40 is omitted in the accompanying drawings of the present specification because it is already known in the art.

First, the configuration of the fixture 12 according to the embodiment of the present invention is as follows.

A reduction motor 30 composed of a DC motor 26 and a reduction gear 28 is mounted between the bracket 20 of the fixed body 12 and the fixed plate 24 provided on the support plate 22. The bracket 20, the support plate 22, and the fixed plate 24 are preferably manufactured integrally by die casting.

The reduction motor 30 is mounted to the rear of the fixing plate 24 because the fixing piece 29 extending on the outer circumference of the reduction motor is fastened through the fixing holes 31a and 33b by the fixing bolts 31a and 31b and the fixing nut. The fastening holes 33a and 33b through which the fixing bolts 31a and 31b pass are vertically inverted in a "+" shape, and the driving shaft hole 25 is also generally formed in a wider shape or in a "+" shape. It allows the installer to arbitrarily adjust the drive shaft fixing position of the reduction motor (30) up, down, left and right as needed.

The drive shaft end of the reduction motor 30 is protruded through the shaft hole of the fixed plate 24 and then pin-coupled with the driving coupling rod 32 to be integrated. The driving coupling rod 32 may be implemented as a coupling rod having a square pillar shape, and may also be configured as a square pillar coupling rod such as a triangular prism to a hexagonal pillar. In addition, the driving coupling rod 32 may be configured as a cylindrical coupling rod 32 having a protrusion 300 protruding from the cylindrical surface, as shown in FIG. 10 as another embodiment of the present invention.

The engaging piece 34 is positioned below the driving coupling rod 32 and is installed on the support plate 22. The locking piece 34 has a structure in which the locking bar 64 of the coupling tube 66 to be described later can be caught. The catching piece 34 is rectangular and is installed in the longitudinal direction, and the back surface is slid. Accordingly, the locking projection bar 64 hanging on the locking piece 34 is minimized the rotational friction with the rotating locking piece 34 of the coupling pipe (66).

A contact switch 36 is mounted at one end of the support plate 22. The contact switch 36 is provided with a working piece 37 on the front and three terminals 84, 86, 88 on the back. Reference numeral "86" denotes a start stage, "84" denotes a common stage, and "88" denotes a confirmation stage applied through a release lamp (90 in FIGS. 8A to 8C) of the battery power supply B ⁺ . The contact switch 36 may be implemented as, for example, a three-contact micro switch.

When the driving coupling rod 32 of the fixed body 12 and the coupling groove 60 of the locking body 14 are fitted and the locking bar 64 is caught by the locking piece 34, the operation of the contact switch 36 is performed. The piece 37 is pushed by the flange part 62 of the coupling tube 66, and is in close contact with the side surface of the flange part 62. As shown in FIG.

The stationary cover 35 has an operating hole 38 through which the coupling pipe 66 of the locking body 14 can enter and exit. The cover 35 is integrally assembled by being fastened to the bracket 20 by the mounting bolt 39.

The installer fastens and fixes the bracket 20 of the fixture 12 to the installation groove of the side wall 6 by using the surface height adjustment bolt 40 so that the fixture 12 is installed on the wall. If necessary, the installer can adjust the surface height of the fixture 12 using the surface height adjustment bolt (40). Height adjustment using the surface height adjustment bolt 40 is a configuration known in the art is omitted in the drawings and detailed description of the present specification.

The DC motor 26 provided in the fixed body 12 can use a rated voltage of 24 volts [V] to 6 volts. If the DC motor 26 is employed for, for example, 12 volts to 6 volts rated voltage it is possible to implement a small motor. However, since the rated voltage of fire-fighting equipment is 24 volts, a regulator is needed to drop the input voltage from 12 to 6 volts.

According to an embodiment of the present invention, when the DC motor 26 is employed at a rated voltage of DC 24 volts, for example, the operating voltage is 10 to 24 volts, the rated load is 2 Kg · cm, the no load current is 25 mA or less, and the load current Is a DC motor with less than 40mA, rotation speed is 90 ± 3 RPM (Revolution Per Minute), no load rotation speed is more than 80RPM, torque torque is 4Kgcm and torque current is 350mA Implement The reduction ratio of the reduction motor composed of the DC motor 26 and the reduction gear 28 is preferably about 1: 122, for example.

When the DC motor 26 is employed with a rated voltage of DC 12 volts, for example, the operating voltage is 6-12 volts, the rated load is 2 Kg · cm, the no-load current is 15 mA or less, the no-load current is 34 mA or less, no load The rotation speed is 86 ± 3 RPM (Revolution Per Minute), the load rotation speed is 70 RPM or more, the torque (stall torque) load is 2Kg · cm, the torque current is implemented as a DC motor with electrical characteristics of 200mA. The reduction ratio of the reduction motor composed of the DC motor 26 and the reduction gear 28 is preferably about 1: 69.95, for example.

For example, when a 12 volt rated voltage DC motor is used, the regulator is required for voltage drop since the fire detector starting voltage (output voltage) is 24 volts. The inventors of the present invention only need to operate within a few seconds (for example, 0.2 seconds to 2 seconds) so that the DC motor according to the embodiment of the present invention can be rotated only by 90 °. It was possible to manufacture DC motors that are much smaller than general-purpose DC motors while using 24 volt rated DC motors.

When the regulator is used for voltage drop and voltage stabilization, a nonpolar circuit for regulator protection must be provided as shown in FIG. 8.

8A to 8C are circuit diagrams of the automatic fire door automatic unlocking device 10 according to an embodiment of the present invention, and FIG. 8A is a double door fire door 2a and 2b, and a rated voltage DC motor 26 to 24 volts. 8b is a circuit diagram when a double door fire door (2a, 2b) and a 24 volt rated voltage DC motor 26 is adopted, and FIG. 8c is a short structure fire door and a 24 volt rated voltage DC motor ( Fig. 26 is a circuit diagram of the circuit when employing it.

First, referring to FIG. 8A, the circuit device of the double door structure fire door automatic unlocking device 10 including the regulator 82 includes a contact switch 83 and voltage regulators 80a and 80b.

The contact switch 83 is composed of a start end 86, a common end 84, a check end 88, and first and second switch units SW1 and SW2. The switch sections SW1 and SW2 are complementarily switched. That is, when the operation piece 37 of the contact switch 83 of FIGS. 3 and 4A is pushed, the switch unit SW1 is turned on, and the switch unit SW2 is turned off. When the operation piece 37 is separated from the contact point, the switch portions SW1 and SW2 are in a state opposite to the push state of the operation piece 37.

The circuit connection structure of the contact switch 36 of the 1st fire door 2a and the 2nd fire door 2b is as follows. A fire detector starting voltage (+) (-), such as a smoke detector, is applied to the starting end 86 and the common end 84 of the contact switch 36, respectively. The start end 86 is connected to the node between the diodes D1 and D2 of the nonpolar circuit 81, and the common end 84 is connected to the common contact b of the first and second switch units SW1 and SW2 of the contact switch 36. , Confirming stage 88 is connected to the c contact of the second switch unit SW2.

In the contact switch 36 of the second fire door 2b, the common end 84 corresponding to the second fire door 2b is connected to the confirmation end 88 corresponding to the first fire door 2a, and the second fire door 2b. The positive start voltage of the fire detector start voltage is applied to the corresponding start end 86. The second fire door 2b is connected to the confirmation terminal 88 through the release lamp 90 to release the battery voltage B ⁺ .

In the state where the fire detector starting voltage is applied, a closed loop is formed only when the switch part SW1 is in an 'on' state, that is, when the operating piece 37 of the contact switch 83 is pushed, thereby making the first fire door 2a The DC motor 26 corresponding to) is driven. However, at this time, the DC motor 26 corresponding to the second fire door 2b does not form a closed loop because SW2 of the first fire door corresponding contact switch 36 is in an 'open' state and thus is not driven.

When the first fire door 2a held in the open state by the automatic fire door automatic release device 10 of the first fire door 2a is released, the operation piece 37 of the contact switch 36 is detached from the contact. The switch unit SW1 of the contact switch 36 is switched off and the switch unit SW2 is switched on. As a result, driving of the DC motor 26 corresponding to the first fire door 2a is stopped, and driving of the driving motor 26 corresponding to the second fire door 2b starts.

When the automatic fire door release device 10 corresponding to the second fire door 2b is operated by driving of the driving motor 26 corresponding to the second fire door 2b, the locking degree of the second fire door 2b is released. do. When the second fire door 2b held in the open state by the automatic fire door automatic release device 10 of the second fire door 2b is released, the operation piece of the corresponding contact switch 36 on the second fire door 2b ( As 37) is removed from the contact point, the switch portion SW1 of the contact switch 36 is turned off and the switch portion SW2 is turned on. When the switch unit SW1 is switched to the 'off' state, the driving of the DC motor 26 corresponding to the second fire door 2b is stopped.

When the first fire door 2a and the second fire door 2b are sequentially closed and then closed, the switch portions SW2 of the contact switches 36 of the first fire door 2a and the second fire door 2b are all 'It's on. Accordingly, the battery power supply B ⁺ is connected to the release lock confirmation lamp 90, the switch part SW2 corresponding to the second fire door 2b, the common node 84, the switch part SW2 corresponding to the first fire door 2a, and the common node 84. A closed loop connected to the negative voltage of the fire detector starting voltage is formed, and as a result, the release canceling confirmation lamp 90 lights up.

The lock release confirmation lamp 90 is turned on after the release of the fire door automatic release device 10 is completely completed, so that the administrator can be sure that the release of the fire doors 2a and 2b is completely completed. .

Meanwhile, in FIG. 8A, the voltage regulators 80a and 80b convert the power supply polarity into a regulator 82 for voltage regulation or / and voltage stabilization at a motor driving rated voltage, for example, 24 to 6 volts. A non-polar circuit 81 for protecting the regulator 82 is configured.

The nonpolar circuit 81 composed of diodes D1 to D4 ensures that a positive power is always applied to the input of the regulator 82 even if the power supply polarity of the start terminal 86 and the common terminal 84 is changed. ) Is applied to the DC motor 26 by voltage regulation and voltage stabilization from 24 volt input power to 24 volts to 6 volts.

In Fig. 8A, capacitor C1 is for peak noise cancellation.

In the configuration as shown in FIG. 8A, the voltage adjusting units 80a and 80b are preferably installed in a free space on the support plate 22 of the fixed body 12 corresponding to the first fire door 2a and the second fire door 2b. Do.

The circuit portion of FIG. 8B is the same as that of FIG. 8A except that the voltage adjusting portions 80a and 80b of FIG. 8A are excluded. That is, the configuration in which the nodes N1 and N2 of FIG. 8A are directly connected to both ends of the DC motor 26 is the configuration of the circuit of FIG. 8B.

In addition, the circuit portion of FIG. 8C is directly connected to the confirmation terminal 88 at the upper portion of FIG. 8A through the release lamp 90 to release the battery voltage B ⁺ .

The configuration of the circuit unit as shown in Figures 8a to 8c, there is an advantage that can be surely secured to the locked and unlocked state of the fire door through the flashing of the release lock confirmation lamp 90, the first fire door (2a) By providing the operation that the second fire door (2b) is closed in the state of completing the closing of the first priority, it has the advantage of replacing the role of the mechanical priority regulator, and has the advantage of distributing the current load by the sequential driving of the motor. .

1 to 5 again, after the fixing body 12 as described above is installed, the outer cover (41 in FIG. 5) is mounted on the side walls 6a and 6b. In this case, as shown in FIG. 5, the cover 35 may be slightly sunk out of the through hole of the outer cover 41.

Next, the installer installs the locking body 14 by drilling a through hole in the fire doors 2a and 2b.

Specifically, the disc-shaped inner support 56 and the disc-shaped outer support 58 of the locking body 14 are fastened by fastening the support bar 48 by the screws 44 and 46. The earth 56, 58 is fixed to the fire doors 2a, 2b. The support portion including the support 56, 58, the support rod 48, and the like may be implemented by various modifications in addition to the disc-shaped support plate.

After passing through the shaft 52 of the adjusting tool 50 through the through hole of the fire door (2a, 2b) and the opening of the support (56, 58) and then coupled with the flange portion 62 at the tip of the shaft (52) The locking body 14 is assembled by fastening the coupling pipe 66 formed with the grooves 60 and the locking bar 64 with the pins 68. The driving coupling rod 32 of the fixed body 12 is fitted into the coupling groove 66 of the coupling tube 66. The locking bar 64 of the coupling pipe 66 is mounted on one side of the outer peripheral surface of the tip of the coupling pipe 66 and has a cylindrical structure. The catching bar 64 is caught by the catching piece 34 of the fixing body 12. In order to minimize the friction with the catching piece 34 when the catch is released, the catching part contact part is slid, and the cylindrical By this, the contact area with the locking piece 34 is minimized.

The rear end of the adjusting tool 50 has a rectangular structure that is generally elongated to one side. This rectangular structure makes it easy for the user to recognize whether the current state of the fire door unlocking device 10 is a locked state or a released state. In the example shown in FIG. 3, when the adjusting device 50 is standing in the vertical state, it becomes a "locked" state. When the adjusting device 50 is rotated clockwise or counterclockwise, the adjusting device 50 is laid in the horizontal state. It is in the "off" state.

As shown in FIG. 9, identification information such as "release" and "hang" is marked on the surface of the adjusting tool 50, and the position of the locking bar 64 is also marked by a red circle 92. desirable.

At the outer end of the rectangular adjustment sphere 50, a half moon-shaped adjustment knob 54 is mounted to be pivotable. The adjustment knob 54 can be used when the user opens or closes the fire doors 2a and 2b, and can also be usefully used to adjust the locking.

Fire door automatic unlocking device 10 according to an embodiment of the present invention of the configuration as described above is simple in structure and manufacturing cost is significantly cheaper than the solenoid method. In addition, there is no need for a separate device for adjusting the security, and there is almost no trouble and malfunction, so the automatic fire door release device is highly reliable.

6 is a state of the release control operation of the automatic fire door release device 10, Figure 7 is a state diagram after the release of the fire door automatic release device 10.

In order to secure the fire doors 2a and 2b to the fire door automatic unlocking device 10, first, the second fire door 2b is opened and the locking body 14 of the second fire door 2b is installed on the corresponding side wall 6b. The first fire door 2a is opened and the locking body 14 of the first fire door 2a is caught by the fixed body 12 provided on the corresponding side wall 6a.

The user pushes the fire door 2b outward to bring the locking body 14 provided on the fire door 2b to the fixed body 12 provided on the corresponding side wall 6b. Then, when the fire door 2b is pushed while maintaining the "release" state with the adjuster knob 54 (adjustment state horizontally), the engaging tube 66 of the locking body 14 becomes the cover 35 of the fixing body 12. The coupling groove 60 of the coupling pipe 66 is inserted into the driving coupling rod 32 of the fixed body 12 while entering through the operating hole 38 of the fixed body 12.

At this time, if the user immediately turns the adjusting knob (54) clockwise or counterclockwise to the "locked" state (adjustment vertical state), as shown in Figure 6, the locking bar 64 of the coupling tube 66 The engaging piece 34 provided on the support plate 22 of the fixing body 12 is caught, and at the same time, the flange 62 surface of the coupling tube 66 compresses the operating piece 37 of the contact switch 36. The fire door 2b is caught by the fire door automatic unlocking device 10. As described above, the closing force of the automatic door closing device 4b such as the door closer in the state where the locking bar 34 is caught by the locking piece 34 is the locking bar 64 and the fixed body 12 of the locking body 14. The engagement between the engaging pieces 34 acts to be more secure.

The first fire door 2a is also caught by the corresponding fire door automatic unlocking device 10 in the same manner as the second fire door 2b described above.

The fire doors 2a and 2b are kept open as the fire doors 2a and 2b are caught by the corresponding fire door automatic unlocking device 10. 5 clearly shows a state in which the fire doors 2a and 2b are hung on the fire door automatic unlocking device 10.

3 to 5, the structure of the coupling groove 60 of the coupling coupling body 66 of the driving coupling rod 32 and the locking body 14 of the fixing body 12 is a square pillar coupling rod 32. Square coupling groove 60 is inserted and driven, this configuration is somewhat difficult to accurately align the fixed body 12 and the locking body 14 during installation. In order to solve this problem, in the embodiment of the present invention, the fastening holes 33a and 33b of the fixing plate 24 installed in the fixing body 24 have a configuration in which the upper and lower sides of the fixing body are elongated and cut. After installing the locking body 14, loosen the fixing bolts (31a, 31b) by moving the position of Shanghai or right and left to re-adjust properly, and then re-fasten the coupling rod 32 mounted on the drive shaft of the reduction motor (30) It can be accurately aligned with the coupling groove 60 of the coupling pipe (66).

In addition, if the structure having a coupling groove 60 of the driving coupling rod 32 and the locking body 14 of the fixed body 12 as shown in Figure 10 is easy to install.

Referring to FIG. 10, the structure of the driving coupling rod 32 of the fixing body 12 is protruded from the outward protrusion 300 formed in the cylindrical longitudinal direction on the outer circumferential surface of the cylindrical body, the coupling body 66 of the locking body 14. Coupling groove 60 in the () is protruded inwardly inclined portion 600 in the longitudinal direction in the circular groove. Cylindrical drive coupling rod 32 is loosely fitted in the circular coupling groove 60, the outward protrusion 300 of the driving coupling rod 32 is a circular coupling groove (up to one rotation in the clockwise or counterclockwise direction) 60 is in contact with the inward projection 600 of the structure.

The structure as shown in FIG. 10 has an advantage that the driving coupling rod 32 can be fitted into the coupling groove 60 when the mounting position of the fixing body 12 or the locking body 14 is generally aligned. Becomes easy. In addition, in Figure 10 to form a "+" shaped fastening holes (33a, 33b) in the fixing plate 24 to facilitate the adjustment of the motor drive shaft.

Fire door locking operation according to the embodiment of the present invention as described above ensures the door locking guarantee regardless of the size or weight of the fire door (2a, 2b), unlike the solenoid method does not need to adjust the guarantee power There is no need for a separate component to adjust the guarantee. Therefore, the structure is very simple and there is almost no balance.

In addition, since the automatic fire door release device 10 of the present invention employs a motor method, the user may manually control the release. That is, when the user turns the control knob 54 in the "locked" state to the "release" state, the fire doors 2a and 2b are released, and the door automatic closing devices 4a and 4b such as the door closer are closed. The fire doors 2a and 2b released by the force can be closed. This easy manual release control operation is one of the features of the present invention which solves the problem that the conventional manual release is substantially impossible.

The fire door lock release may be performed by a user's manual operation as described above, or may be performed by a motor drive by electrical control by fire detection by smoke or heat detection to be described later.

Hereinafter, the operation of the automatic fire door unlocking device 10 by electrical control according to the embodiment of the present invention will be described in detail as follows.

When the first and second fire doors 2a and 2b are caught in the corresponding fire door automatic release device 10, the flange portion 62 of the locking body 14 pushes the operation piece 37 of the contact switch 36, As such, the switch portion SW1 of the contact switches 36 corresponding to both fire doors 2a and 2b is in an 'on' state and the switch portion SW2 is in an 'off' state.

In this state, when the smoke detector installed in the indoor ceiling detects the smoke or toxic gas caused by the fire, the smoke detector detects that the fire detection signal corresponding to the fire is a starting voltage of 24 V and the contact switch 36 corresponding to the first fire door 2a. Is applied to the starting end 86 and the common end 84. At this time, since the switch part SW1 corresponding to the first fire door 2a is in an on state, a closed loop is formed to drive the DC motor 26.

The driving force of the DC motor 26 is decelerated at a predetermined reduction ratio through the reduction gear 28 to rotate the driving coupling rod 32 of the fixed body 12 in a predetermined direction in a clockwise or counterclockwise direction. Then, the coupling pipe 66 of the locking body 14 inserted into the driving coupling bar 32 is also engaged with the bar, and the locking bar 64 of the coupling pipe 66 is also rotated together to be removed from the locking piece 34. At the same time, by the closing force of the automatic door closing device 4a, the coupling body coupling groove 60 of the locking body 14 also exits from the driving coupling rod 32. As a result, the first fire door 2a is closed.

In the contact switch 36 of the first fire door 2a, the switch portion SW1 is in an 'off' state as the coupling pipe 66 of the first fire door 2a corresponding locking body 14 is pulled out of the fixing body 12. SW2 is switched to the 'on' state, and thus a starting voltage of 24 V is applied to the start terminal 86 and the common terminal 84 of the corresponding contact switch 86 of the second fire door 2b.

Accordingly, the DC motor 26 corresponding to the second fire door 2b is driven in the same procedure as described above, and the driving coupling rod 32 of the fixed body 12 is rotated by the driving of the DC motor 26. . Then, the coupling pipe 66 of the locking body 14 inserted into the driving coupling bar 32 is also engaged and rotated, so that the locking bar 64 of the coupling pipe 66 is also rotated so as to be removed from the locking piece 34. At the same time, by the closing force of the automatic door closing device 4b, the coupling body coupling groove 60 of the locking body 14 also exits from the driving coupling rod 32. As a result, the second fire door 2b is closed.

On the other hand, when the coupling body 66 of the locking body 14 corresponding to the second fire door 2b is pulled out of the fixing body 12, the switch SW1 is 'off' at the contact switch 36 of the second fire door 2b. In this state, SW2 is switched to the 'on' state. Accordingly, the battery power supply B ⁺ is connected to the release lock confirmation lamp 90, the second fire door 2b corresponding switch unit SW2, the common node 84, the first fire door 2a corresponding switch unit SW2, and the common node 84. Since the current flows through the closed loop connected to the negative voltage of the fire detector starting voltage, the release lock confirmation lamp 90 is turned on.

By turning on the lock release confirmation lamp 90, the administrator can confirm that the release from the fire door automatic release device 10 is completely completed.

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. For example, the drive shaft of the fixing body 12 may be configured to extend to penetrate the support holes 54 and 58 of the locking body 14, and the fitting and locking structure between the fixing body 12 and the locking body 14 may be It may be implemented to be provided near the front end of the adjusting tool 50, that is, the adjusting tool handle 54 of the locking body (14).

Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

As described above, the automatic fire door unlocking device of the present invention has a low manufacturing cost, and is highly reliable, operable with a small amount of current consumption, and manual latch release control is also possible. In addition, the present invention has the advantage that the door locking guarantee power is secured regardless of the size or weight of the fire door, and the re-locking prevention function in the structure. In particular, the small current consumption (20 mA to 40 mA load) per fire door automatic release device consumes only about 1 ampere (A) at the same time during the operation test or actual operation of the 20th to 30th floors of the apartment. Solve the most sensitive considerations. Therefore, it is possible to solve the difficulty of adopting an expensive and consumable spare power storage battery.

1 and 2 is a state diagram of a fire door automatic unlocking device installed in accordance with an embodiment of the present invention, Figure 1 is an external view, Figure 2 is a sectional plan view,

3 is an exploded perspective view of an automatic fire door unlocking device according to an embodiment of the present invention;

Figure 4a is a perspective view of the main door combined automatic fire release device according to an embodiment of the present invention,

4b is a cross-sectional view of the fixing plate of the fixture;

5 is a side cross-sectional view when the fire door automatic unlocking device is in a locked state;

6 is a state of release control operation of the automatic fire door unlocking device,

Figure 7 is a state after the automatic door unlocking device release operation,

8a to 8c is a circuit diagram of the automatic fire door unlocking device according to an embodiment of the present invention,

9 is an example of the identification information is stamped on the surface of the adjustment mechanism of the locking body;

Figure 10 is a perspective view of the main portion coupled to the automatic fire door release device according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

2a, 2b: Fire door 4a, 4b: Automatic door closing device

6a, 6b: sidewall 10: fire door automatic release device

12: fixed body 14: locking body

26: DC motor 28: reduction gear

30: reduction motor 32: drive coupling rod

50: adjuster 54: adjuster handle

64: binding bar 66: coupling body

Claims (16)

delete delete delete delete In fire door automatic unlocking device, The fixed body is installed on the side wall of the fire door and the locking body is installed on the fire door, wherein the fixed body is configured by fastening and mounting the drive coupling rod to the drive shaft of the reduction motor and mounting the locking piece on the support plate, the locking body is a fire door By adjusting the adjusting rod shaft penetrating the support installed in the coupling groove and the engaging pipe formed with the locking bar is formed, By the user's manual adjustment and driving of the reduction motor according to the electric control, the driving coupling rod of the fixed body is fitted into the coupling body coupling groove of the locking body, and the locking operation of the locking bar is caught by the locking member and vice versa. Fire door automatic unlocking device, characterized in that consisting of. The method according to claim 5, wherein the support plate is provided with a contact switch, the coupling pipe body is configured with a flange, the contact between the flange portion of the coupling pipe and the operating piece of the contact switch is selectively made during the locking operation and the locking operation. Fire door automatic release device. The method of claim 5 or 6, wherein the reduction motor A DC motor driven with a preset DC voltage within a rated voltage range of 24 to 6 volts, Fire door automatic unlocking device characterized in that the gear is configured with a reduction gear. The fire door automatic unlocking device according to claim 5 or 6, wherein the coupling coupling body of the driving coupling rod and the locking body of the fixing body is fitted into a rectangular structure. The method of claim 5 or claim 6, wherein the driving coupling rod of the fixed body is composed of a cylindrical coupling rod protruding outward projection on the outer peripheral surface, the engaging groove in the coupling tube of the locking body is configured such that the inward protrusion in the circular groove The cylindrical drive coupling rod is loosely fitted in the circular coupling groove, the outward protrusion of the driving coupling rod and the inward protrusion of the circular coupling groove is in contact with each other by clockwise and counterclockwise rotation. The contact switch of claim 6, wherein the contact switch includes a start end, a common end, a check end, and first and second switch units SW1 and SW2, and the start end and the common end have positive and negative voltages of the fire detector starting voltage. Is applied, and the battery power is applied to the check stage is released through the confirmation lamp, the switch door SW1 and SW2 is complementary depending on whether the operating piece of the contact switch is pushed, automatic fire door release device. The method according to claim 7, The contact a of the first switch unit SW1 is connected to the reduction motor, the common contact b of the first and second switch units SW1 and SW2 is connected to the common terminal, and the contact c of the second switch unit SW2 is connected to the confirmation terminal. Fire door automatic unlocking device characterized in that. The fire door automatic unlocking device according to claim 5 or 6, wherein an adjustment knob is pivotably mounted at an outer end of the adjustment tool. The fire door automatic unlocking device according to claim 12, wherein the identification information corresponding to the locking and the unlocking and the position marker of the locking bar are imprinted on the surface of the adjusting tool. The method according to claim 5 or 6, Fire door automatic unlocking device, characterized in that for adjusting the position of the drive shaft of the reduction motor and fastening the reduction motor through a fastening hole cut in the "+" type to the fixed plate of the fixed body. In fire door automatic unlocking device, The first and second fasteners are provided on each of the first and second fire doors of the double door structure, and the first and second fasteners are installed on the first and second fire doors. The first and second reduction gear is configured to be engaged with the fitting fitting body of the first and second locking bodies to the drive shaft rotated by the first reduction gear, As the starting voltage is supplied by the fire detection, the first locking body is released by the rotation of the first reduction motor, and then the driving of the first reduction motor is stopped and the second locking body is released by the rotation of the second reduction motor. Fire door automatic unlocking device characterized in that the circuit portion to be made. The fire door automatic unlocking device according to claim 15, further comprising a locking release confirmation lamp that lights up as the second locking body releases the lock.