KR100961229B1 - Door-closer for fire prevention - Google Patents

Door-closer for fire prevention Download PDF

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Publication number
KR100961229B1
KR100961229B1 KR1020090079473A KR20090079473A KR100961229B1 KR 100961229 B1 KR100961229 B1 KR 100961229B1 KR 1020090079473 A KR1020090079473 A KR 1020090079473A KR 20090079473 A KR20090079473 A KR 20090079473A KR 100961229 B1 KR100961229 B1 KR 100961229B1
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KR
South Korea
Prior art keywords
cylinder body
expansion tank
opening
closing member
receiving portion
Prior art date
Application number
KR1020090079473A
Other languages
Korean (ko)
Inventor
김광태
Original Assignee
(주) 아이레보 금강씨에스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by (주) 아이레보 금강씨에스 filed Critical (주) 아이레보 금강씨에스
Priority to KR1020090079473A priority Critical patent/KR100961229B1/en
Application granted granted Critical
Publication of KR100961229B1 publication Critical patent/KR100961229B1/en

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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/70—Power-operated mechanisms for wings with automatic actuation
    • E05F15/72—Power-operated mechanisms for wings with automatic actuation responsive to emergency conditions, e.g. fire
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/218—Holders
    • E05Y2201/22—Locks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/40—Physical or chemical protection
    • E05Y2800/414—Physical or chemical protection against high or low temperatures
    • E05Y2800/416—Physical or chemical protection against high or low temperatures against fire
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors
    • E05Y2900/134—Fire doors

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Special Wing (AREA)

Abstract

PURPOSE: A door locking device for fire prevention is provided to prevent fire from being expanded indoors by expanding working fluid to the outside through drainage of the working fluid. CONSTITUTION: A door locking device for fire prevention comprises a cylinder body(10), a spring(30), working fluid, and a rotating shaft(50). The cylinder body comprises a receiving part(11). The receiving part comprises a piston(20), an opening and closing member(60), and an expansion tank(70). The opening and closing member comprises a refueling hole(61) shielded by a fuse element. The fuse element is heated over the melting point by fire and is fused to open the refueling hole. The expansion tank comprises a vapor outlet(72) and is installed outside the opening and closing member. The vapor outlet discharges the steam vapor of working fluid flowing into the expansion tank to the outside.

Description

Fire Door Locks {Door-closer for Fire prevention}

The present invention relates to a door lock device for fire protection, and more particularly, in the present invention, to prevent the internal pressure of the receiving portion formed in the cylinder body from excessively rising through the draining of the thermally expanded hydraulic fluid, thereby preventing the cylinder body from rupturing. The present invention relates to a fire door closer that prevents the spread of the working oil discharged from the receiving portion of the cylinder body to the outside, thereby preventing the spread of the fire by spreading the working oil.

As is well known, door locks are installed on the entrance doors of offices, shopping malls, apartments, etc., and the doors are automatically closed.In particular, fire doors are equipped with door stoppers that control the automatic opening and closing of the doors. The ventilation area is secured by closing the fire door through the locking device.

In general, the door locking device, in the cylinder body containing the spring and the spring forming the elastic force, and the hydraulic fluid having a speed control function of the piston, the piston and the rack and pinion structure to convert the linear feed force of the piston into the rotational force The rotating shaft is formed.

On the other hand, the door lock device installed in the fire door for the purpose of preventing the spread of the fire, when the fire door is exposed to the flame, the heat is conducted and heated, when the door lock is heated is filled in the cylinder body Inevitably a problem arises that the used hydraulic fluid is thermally expanded, and a hermetic ring for preventing leakage of the hydraulic fluid is thermally damaged.

When the hydraulic fluid filled in the cylinder body is thermally expanded, the cylinder body may be ruptured by an increase in pressure due to the thermal expansion of the hydraulic oil, and when the sealing ring is heat damaged, the hydraulic oil is widely leaked to the outside through a damaged sealing ring. This may occur.

Thus, when the hydraulic oil leaks widely in the regeneration zone due to the rupture of the cylinder body or damage to the airtight ring, the leaked hydraulic oil ignites or ignites, causing a fire in the regeneration zone, which is a safe zone from the fire.

An object of the present invention devised to solve the above problems is to prevent the internal pressure of the receiving portion formed in the cylinder body from excessively rising through the draining of the thermally expanded hydraulic fluid to prevent the cylinder body from rupturing, the housing of the cylinder body It is to provide a fire door closer for preventing the spread of the operating oil is ignited by the diffusion of the working oil circulated from the outside to prevent the fire spreading in the room.

The above object is achieved by the following configuration provided in the present invention.

Fire door lock device according to the invention,
A cylinder body having a receiving portion; A piston installed in the receiving portion of the cylinder body; A spring for supporting the piston installed in the receiving portion of the cylinder body in one direction; Working oil filled in the receiving portion of the cylinder body to control the movement speed of the piston; And a rotation shaft configured to convert the straight feed force of the piston into a rotational force and output the rotational force.
In the receiving portion of the cylinder body, an opening and closing member having an exhaust port shielded by the soluble body is installed to form a sealed state, and the soluble body is melted when heated above the melting point by the firearm to open the drain port. On the other hand, the expansion tank for receiving the hydraulic oil drained from the receiving portion through the open drain hole is provided in communication with the outside of the opening and closing member,

When the soluble body is heated above the melting point by the heat conducted through the fire door, and the drain hole of the opening / closing member is opened, the hydraulic oil filled in the receiving portion of the cylinder body and thermally expanded by heating is moved outward through the open drain port. The phenomenon that the internal pressure of the cylinder body is excessively increased by the discharged heat-expanded hydraulic fluid is prevented, and the hydraulic oil drained through the drainage port is accommodated in the expansion tank installed outside the opening / closing member to receive the opening through the drain port of the opening / closing member. It is characterized in that it is configured to prevent the thermal expansion of the hydraulic fluid is drained to the outside in the diffusion.

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According to the present invention, the soluble body is composed of a form in which a soluble material that is melted when heated above a reference temperature is inserted into a hollow of a hollow bush made of a copper material having excellent thermal conductivity, and a steam outlet communicating with an outside of the expansion tank. Is formed, the steam generated by the heating of the working oil introduced into the expansion tank by the steam outlet is configured to be discharged to the outside.

In addition, the opening and closing member and the expansion tank in which the drain port is formed may be formed by integrally molding during the molding process of the cylinder body through die casting, and the fastening portion which is engaged with the fastening portion formed in the cylinder body corresponds to the expansion tank provided with the opening and closing member. It may be formed so as to fasten the expansion tank provided with an opening and closing member on the cylinder body.

In addition, the cylinder body is prevented from being directly transferred to the heat provided through the fire door by the heat insulating member is installed on the installation surface, the cover is covered with the cylinder body and the expansion tank to suppress their external exposure, The cover has a circulation hole which is a circulation path of air, and is configured to circulate the outside air through the circulation hole to cool the cylinder body and the expansion tank.

As described above, the present invention includes an expansion tank communicating with a receiving portion of a cylinder body filled with hydraulic oil; By providing an opening / closing member which closes the receiving portion and the expansion tank at room temperature and opens at a temperature above the melting point, a door locking device is provided to secure a regular discharge path and a storage space of the hydraulic oil thermally expanded by a fire.

When the discharge path and the storage space of the thermally expanded hydraulic fluid are secured, the hydraulic fluid charged into the cylinder body is thermally expanded by the heat conducted from the fire door heated by the fire, causing the cylinder body to burst momentarily or the hydraulic oil leaks from the cylinder body. The phenomenon can be prevented, and the safety accidents caused by the rupture of the cylinder body and the spread of the hydraulic oil can be prevented, and the problem that the conventional hydraulic oil is widely spread in the regenerating zone can be solved to cause a fire in the regenerating zone through ignition or ignition. Thus, the ignition factor by the door lock can be eliminated.

Particularly, in the present invention, the expansion tank provided with the opening and closing member is configured to be fixed to the general purpose cylinder body by fastening, so that it can be applied without design deformation of the conventional cylinder body used for general purpose, and thus the cover has improved compatibility. It has a beautiful appearance by suppressing the external exposure of the cylinder body and the expansion tank.

In addition, in the present invention, by installing a heat insulation piece between the cylinder body and the fire door, to block the heat conduction from the fire door, to prevent the heating of the cylinder body filled with the hydraulic fluid, it is configured to perform the original function of the door lock for a longer time have.

Hereinafter, with reference to the accompanying drawings will be described in detail a fire door lock device proposed in the preferred embodiment of the present invention.

1 is a view showing the entire configuration of a fire door closer proposed as a preferred embodiment in the present invention, Figure 2 is a state diagram of the construction of the fire door closer proposed in the preferred embodiment of the present invention to the fire door. 3 and 4 show the cross-sectional configuration of the door closer for fire protection proposed in the preferred embodiment of the present invention, Figure 5 is an opening and closing member provided in the door closer for fire protection proposed in the preferred embodiment of the present invention; This is a working state diagram showing the discharge state of the hydraulic oil through the expansion tank in sequence.

The fire door lock device 1 according to the present invention includes a cylinder body 10 having a receiving portion 11 as shown in FIGS. 1 to 4; A piston (20) installed in the receiving portion (11) of the cylinder body (10); A spring 30 which supports the piston 20 installed in the receiving portion 11 of the cylinder body 10 in one direction; A hydraulic oil 40 filled in the receiving portion 11 of the cylinder body 10 to control a moving speed of the piston 20; And it is configured to include a rotary shaft 50 for outputting by converting the linear feed force of the piston 20 to the rotational force.

The fire door lock device 1 according to the present embodiment configured as described above is fixed to the fire door 100 as shown in FIG. 2, and the upper end of the rotating shaft 50 formed to protrude upward from the cylinder body 10 is a door frame ( It is connected to the folding link 210 fixed through the fixing bracket 200 to the 110, to facilitate the closing of the fire door 100 through the rotational force output through the rotating shaft (50).

That is, when the user opens the fire door 100, the rotating shaft 50 rotates in the reverse direction, and the piston 20 engaged therewith compresses the spring 30 while moving in the reverse direction.

When the user puts the fire door 100 in this state, the piston 20 is moved in the forward direction by the elastic force of the compressed spring 30, the rotary shaft 50 engaged with the piston 20 is in the forward direction By rotating, the folding link 210 developed by the opening of the fire door 100 receives a rotational force from the rotating shaft 50 rotating in the forward direction and closes the fire door 100 while being folded.

And, in the opening and closing process of the fire door 100, the hydraulic oil 40 filled in the receiving portion 11 of the cylinder body 10 is a circulation tube 21 formed in the cylinder body 10, or the piston 20 By controlling the movement speed of the piston (20) while circulating to the left or right side of the receiving portion (11).

The door lock device 1 for the fire door according to the present embodiment configured as described above, when the heat of the fire door 100 heated by the fire is conducted to the cylinder body 10, the hydraulic oil 40 filled in the cylinder body 10. ) Is thermally expanded.

In addition, when the hydraulic oil 40 is thermally expanded as described above, the internal pressure of the cylinder body 10 is increased, thereby causing rupture, and inevitably, the hydraulic oil 40 leaks to the outside through an airtight ring damaged by heat. As a result, the working oil 40 is diffused in a large area, and a fire may be generated by the ignition of the working oil in the regeneration zone formed on one side of the fire door 10.

In order to solve this problem, in the present embodiment, when the cylinder body 10 is raised above the reference temperature by the heat generated by the fire, a part of the hydraulic oil 40 which is filled in the accommodating part 11 and thermally expanded is predetermined path. It is configured to be discharged and stored through the outside, to prevent the rupture or physical damage of the cylinder body 10 due to the thermal expansion of the working oil 40, which is intended to be the technical gist of the present application.

To this end, in the present embodiment, an expansion tank (70) communicating with the receiving portion (11) is added to the cylinder body (10), and installed between the receiving portion (11) and the expansion tank (70). 61 is provided with the opening and closing member 60 is formed, while the exhaust port 61 formed in the opening and closing member 60 is provided with a soluble body 62 which is melted when heated above the melting point, so that the cylinder body 10 Receiving portion 11 and expansion tank 70 is maintained at a mutually shielded state by the opening and closing member 60 at room temperature, the drain hole formed in the opening and closing member 60 when the soluble body 62 is heated above the melting point ( Through 61, these receiving portions 11 and the expansion tank 70 is in communication with each other.

Here, the opening and closing member 60 for partitioning the receiving portion 11 and the expansion tank 70 of the cylinder body 10 may be manufactured separately and installed between them, the cylinder body 10 or the expansion tank ( It may be formed by integrally molding in 70), all of which are intended to be technical scope of the present application.

And, if necessary, the oil supply pipe 73 is installed in the expansion tank 70, when the hydraulic fluid of the predetermined amount or more of the expansion tank 70 is stored, the hydraulic oil is discharged to the outside through the oil supply pipe 73, or It can be configured to be stored in the auxiliary tank (70 ') provided.

At this time, the auxiliary tank (70 ') or the drain pipe (73), it is preferable that the same or lower than the height of the receiving portion 11 formed in the cylinder body 10 for the stable discharge of the hydraulic oil 40, In this embodiment, the auxiliary tank 70 'is provided in the lower part of the cylinder body 10. As shown in FIG.

And, if necessary, the opening and closing member 60 and the expansion tank 70 are respectively installed on the left and right sides of the receiving portion 11 formed in the cylinder body 10, the receiving portion 11 of the cylinder body 10 The hydraulic oil 40, which is filled in and thermally expanded, is divided into the expansion tanks 70 installed on both sides thereof to be stored.

On the other hand, the soluble body 62 for shielding the drain port 61 formed in the opening and closing member 60 maintains a solid state below the melting point to achieve stable shielding of the drain port 61, but above the melting point. When heated, it melts to form an open state of the drain port 61, and molten lead or molten plastic having a melting point of 70 ° C to 90 ° C is usually adopted.

In the present embodiment, the soluble body 62 is configured in such a manner that a soluble material 62b that is melted when heated above the melting point is inserted into the hollow of the hollow bush 62a made of a copper material having excellent thermal conductivity. As described above, the drain port 62 formed in the opening and closing member 60 is configured to be easily installed through interference fit.

In addition, the opening and closing member 60 and the expansion tank 70 in which the drain port 61 is formed may be formed by integrally molding during the molding process of the cylinder body 10 through die casting, as shown in FIG. As shown in Figures 1 and 3 may be installed by simply assembling the side portion of the receiving portion 11 formed in the cylinder body 10 to be manufactured separately and produced universally.

In this embodiment, among these, the stopper which closed one side of the receiving opening 11 opened through the fastening with the conventional cylinder body 10 is removed, and the expansion tank 70 in which the opening / closing member 60 was formed in one cylinder is carried out. It is proposed in the preferred embodiment fixed to one body by fastening to one side, for this purpose in this embodiment fastening portion 12 formed on one side of the cylinder body 10 on one side of the expansion tank (70) Fastening portion 71 to be fastened to the corresponding is formed.

Therefore, the door lock device 1 according to the present embodiment, as shown in Figures 1 and 3, and removes the stopper member fixed through the fastening without structural change of the cylinder body 10, which is now universally used, this removal The discharge path and the storage space of the thermally expanded hydraulic fluid 40 are secured by being fastened to the cylinder body 10.

In addition, in the present embodiment, a steam outlet 72 is formed on the upper portion of the expansion tank 70 to communicate with the outside, so that the operating oil 40 introduced into the expansion tank 70 by the steam outlet 72 is formed. The steam generated by heating is discharged to the outside.

In addition, an auxiliary exhaust port 13 is formed in the upper portion of the cylinder body 10 to communicate with the receiving portion 11, the auxiliary exhaust port 13 is available in the drain port 61 of the opening and closing member 60 The high temperature soluble body 14 with a melting point relatively higher than the sieve 62 is provided.

Here, the high temperature soluble body 14 for closing the auxiliary exhaust port 13 maintains a solid state below the melting point, similarly to the soluble body 62 for shielding the drain port 61 of the opening / closing member 60. In order to achieve stable shielding of the auxiliary exhaust port 13, the molten lead or the molten plastic having a melting point of 200 ° C. to 250 ° C. is usually adopted by melting at a melting point or more to form an open state of the auxiliary exhaust port 13.

The door locking device 1 according to the present embodiment configured as described above is fixed to the inner wall of the fire door through a fixing bolt B to generate an action force required for the closing of the fire door 100, and in this embodiment, made of a metal material. The heat insulation between the fire door 100 and the cylinder body 10 by the heat insulation piece 80 is provided by installing the heat insulation piece 80 therebetween without directly contacting the installation surface of the cylinder body 10 with the fire door 100. Is suppressed.

In addition, in the present embodiment, the cover body 90 is covered with the cylinder body 10 and the expansion tank 70 to suppress the external exposure thereof. In this case, the cover 90 has a circulation hole which is a circulation path of air ( As shown in FIG. 2, as shown in FIG. 2, outside air circulates through the circulation hole 91 to the inside of the cover 91, thereby cooling the cylinder body 10 and the expansion tank 70.

The door locking device 1 according to the present embodiment installed through the above process, in the normal temperature state, the opening and closing member 60 closes the accommodating part 11 of the cylinder body 10 filled with the hydraulic fluid to stably close the spring 30. ) And the closing force required for the closing of the fire door 100 through the internal circulation of the hydraulic fluid (40) stably generates.

However, when the opening / closing member 60 and the soluble body 62 are heated higher than the melting point of the soluble body 62 due to the fire in the state of FIG. 5A, the soluble outlet 61 is closed as shown in FIG. 5B. The sieve 62 opens the drain port 61 of the opening / closing member 60 which has been melted and closed, and by opening the drain port 61 formed in the opening / closing member 60 by melting of the soluble body 62. The hydraulic oil 40 filled and thermally expanded in the receiving portion 11 of the cylinder body 10 is stored in the expansion tank 70 through the drain port 61 of the opening and closing member 60.

During this process, the steam outlet 72 formed in the upper portion of the expansion tank 70 is discharged into the expansion tank 70 from the receiving portion 11 of the cylinder body 10 by thermal expansion and is evaporated by heat By gradually discharging the steam of the, the internal pressure of the expansion tank 70 is lowered.

Thus, the door lock device 1 according to the present embodiment is designed to stably discharge and separate storage of the thermally expanded hydraulic fluid 40 in the receiving portion 11 of the cylinder body 10, and thus the thermally expanded hydraulic fluid 40 The rupture of the cylinder body by) and leakage of the hydraulic oil thermally expanded from the cylinder body can be prevented.

And, even after the hydraulic fluid 40 filled in the receiving portion 11 of the cylinder body 10 is distributed to the expansion tank 70 through the drain port 61 of the opening and closing member 60 to be discharged. When continuous heating of 10) is achieved and the cylinder body is heated to 200 ° C. to 250 ° C. or more, the high temperature soluble body 14 formed in the auxiliary exhaust port 13 of the cylinder body 10 also melts as shown in FIG. 5C. The receiving portion 11 formed in the 10 communicates with the outside via the auxiliary exhaust port 13.

Therefore, since the vapor of the hydraulic oil 40 remaining and evaporated in the accommodating part 11 of the cylinder body 10 is discharged through the auxiliary outlet 13, the accommodating part 11 of the cylinder body 10 may be discharged. The residual hydraulic oil 40 is evaporated by the heat to raise the internal pressure of the accommodating part 11, so that the phenomenon that the hydraulic oil 40 remaining in the accommodating part 11 is continuously discharged to the expansion tank 70 can be suppressed. Can be. Thus, the expansion tank 70 can be made smaller in the design process, and the problem of damaging the appearance by an excessively large expansion tank can be solved.

Figure 1 shows the overall configuration of the door closer for fire protection proposed in the preferred embodiment of the present invention,

Figure 2 is a state diagram of the construction of the fire door to the fire door proposed in the preferred embodiment of the present invention,

3 and 4 show the cross-sectional configuration of the door closer for fire protection proposed in the preferred embodiment of the present invention,

FIG. 5 is an operational state diagram sequentially showing the discharge state of the working oil through the opening and closing member and the expansion tank provided in the fire door closer as proposed in the preferred embodiment of the present invention.

**** Explanation of symbols for the main parts of the drawing ****

1. Fire door lock

10. Cylinder body 11.Receiving part

12. Fastening part 13. Auxiliary exhaust port

14. High Temperature Soluble

20. Piston 21. Circulation pipe

22. Airtight Ring 23. Rack

30.Spring 40.Operating Oil

50. Spindle 51. Pinion

60. Opening and closing member 61. Drain hole

62. Soluble 62a. Hollow Bush

62b. Soluble

70. Expansion tank 70 '. Auxiliary tank

71. Fasteners

72. Steam outlet 73. Drain pipe

80. Insulation piece

90. Cover 91. Circulation hole

100. Fire door 110. Door frame

200. Retention Bracket 210. Folding Link

     B. Fixing Bolt

Claims (10)

A cylinder body having a receiving portion; A piston installed in the receiving portion of the cylinder body; A spring for supporting the piston installed in the receiving portion of the cylinder body in one direction; Working oil filled in the receiving portion of the cylinder body to control the movement speed of the piston; And a rotating shaft configured to convert the straight feed force of the piston into a rotating force and output the rotating shaft, the door locking device being configured to provide a closing force to the fire door through the rotating force fixed through one side of the fire door and output through the rotating shaft. In the receiving portion of the cylinder body, an opening and closing member having an exhaust port shielded by the soluble body is installed to form a sealed state, and the soluble body is melted when heated above the melting point by the firearm to open the drain port. On the other hand, the expansion tank for receiving the hydraulic oil drained from the receiving portion through the open drain hole is provided in communication with the outside of the opening and closing member, When the soluble body is heated above the melting point by the heat conducted through the fire door, and the drain hole of the opening / closing member is opened, the hydraulic oil filled in the receiving portion of the cylinder body and thermally expanded by heating is moved outward through the open drain port. The phenomenon that the internal pressure of the cylinder body is excessively increased by the discharged and thermally expanded hydraulic fluid is prevented, and the hydraulic oil drained through the drainage port is accommodated in the expansion tank installed outside the opening / closing member, thereby receiving it through the drain port of the opening / closing member. Fire prevention door locks, characterized in that configured to prevent the phenomenon that the working oil drained in the heated state in the outside to diffuse. The fire protection door lock device according to claim 1, wherein the soluble body comprises a soluble material which is melted when heated above a reference temperature in a hollow of a hollow bush made of a copper material having excellent thermal conductivity. According to claim 1, wherein the upper portion of the expansion tank is formed with a steam outlet communicating with the outside, the steam generated by the heating of the operating oil introduced into the expansion tank by the steam outlet is configured to discharge to the outside Fire door lock. The fire door lock device according to claim 1, wherein a fastening portion is formed in the expansion tank in which the opening and closing member is formed, and the expansion tank having the opening and closing member is fixed to the fastening portion of the cylinder body by fastening. According to claim 1, wherein the opening and closing member and the expansion tank is formed; And the cylinder body is formed by integrally molding a die casting. The fire protection door lock device according to claim 1, wherein an oil supply pipe for discharging the stored hydraulic oil to an external or auxiliary tank is installed in the expansion tank. According to claim 1, wherein the left and right sides of the cylinder body, the expansion tank in communication with the receiving portion and the opening and closing member for partitioning the receiving portion of the expansion tank and the cylinder body are respectively installed, the thermal expansion in the receiving portion of the cylinder body Fire protection door lock device, characterized in that configured to be divided into the expansion tank disposed on the left and right sides of the cylinder body through the drain port of the opening and closing member open. According to claim 1, An auxiliary exhaust port is formed in the upper portion of the cylinder body, the auxiliary exhaust port is configured to be shielded by a high temperature soluble body having a melting point relatively higher than the soluble body provided in the drain port of the opening and closing member, The soluble body formed in the opening / closing member is melted by the heating of the cylinder body, and the working oil filled in the receiving portion of the cylinder body is drained to the expansion tank through the drainage port, and then the high temperature soluble body formed in the auxiliary exhaust port is heated sequentially by heating the cylinder body. When melted, the fire door lock device, characterized in that the steam generated by the evaporation of the working oil remaining in the cylinder body is configured to be discharged through the auxiliary exhaust port. The fire door lock according to claim 1, wherein the cylinder body is configured to prevent a phenomenon in which heat provided through the fire door is directly transmitted by the heat insulating member installed on the installation surface. According to claim 1, wherein the cylinder body and the expansion tank is covered with a cover to suppress their external exposure, while the cover is formed with a circulation hole which is a circulation path of air, through the circulation hole to the outside air inside the cover Fire door lock device characterized in that configured to promote the cooling of the cylinder body and the expansion tank by circulating to.
KR1020090079473A 2009-08-26 2009-08-26 Door-closer for fire prevention KR100961229B1 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101051129B1 (en) 2009-04-27 2011-07-22 주창희 Automatic door closing device for smoke control area with integral driving part and control device
CN104074427A (en) * 2013-03-26 2014-10-01 利优比株式会社 Door closer
KR101509067B1 (en) 2013-03-18 2015-04-06 (주) 금강씨에스 Apparatus for opening and shutting of windows
KR101634276B1 (en) 2016-04-08 2016-06-30 주식회사 예스코리아 Door lock for shelter
KR101814083B1 (en) 2016-04-12 2018-01-02 장일환 Plastic front door with door closer
GB2561063A (en) * 2017-02-06 2018-10-03 Geze Gmbh Drive for a door leaf or window leaf
EP4015752A1 (en) * 2020-12-21 2022-06-22 dormakaba Deutschland GmbH Door actuator and door unit

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KR200437900Y1 (en) 2006-12-28 2008-01-07 오태준 Structure of impact absorption using funiture door

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
KR200437900Y1 (en) 2006-12-28 2008-01-07 오태준 Structure of impact absorption using funiture door

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101051129B1 (en) 2009-04-27 2011-07-22 주창희 Automatic door closing device for smoke control area with integral driving part and control device
KR101509067B1 (en) 2013-03-18 2015-04-06 (주) 금강씨에스 Apparatus for opening and shutting of windows
CN104074427A (en) * 2013-03-26 2014-10-01 利优比株式会社 Door closer
CN104074427B (en) * 2013-03-26 2016-07-06 利优比株式会社 Door closer
KR101634276B1 (en) 2016-04-08 2016-06-30 주식회사 예스코리아 Door lock for shelter
KR101814083B1 (en) 2016-04-12 2018-01-02 장일환 Plastic front door with door closer
GB2561063A (en) * 2017-02-06 2018-10-03 Geze Gmbh Drive for a door leaf or window leaf
EP4015752A1 (en) * 2020-12-21 2022-06-22 dormakaba Deutschland GmbH Door actuator and door unit

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