WO2006123914A1

WO2006123914A1 - Fire closure shutter

Info

Publication number: WO2006123914A1
Application number: PCT/KR2006/001883
Authority: WO
Inventors: Kap-Il Park; Ji-Sung Park
Original assignee: Kap-Il Park; Ji-Sung Park
Priority date: 2005-05-19
Filing date: 2006-05-19
Publication date: 2006-11-23
Also published as: JP4793946B2; JP2008545070A

Abstract

Provided is a fire closure shutter in which a door hinge bracket is connected and installed between a slat of the fire closure shutter and a slat of an emergency exit to open and close the emergency exit, a shield bracket is installed between the slat of the fire closure shutter and the slat of the emergency exit to shield a gap between the emergency exit and the fire closure shutter, and end brackets are installed at both ends of the fire closure shutter, wherein the door hinge bracket includes first and second door hinge brackets and a hinge unit in which airtight shielding is provided, wherein the shield bracket comprises first and second shield brackets having combination parts and combination grooves such that rotation is free and engagement and combination are airtight with respect to another shield bracket, and wherein the end bracket comprises combination parts and combination grooves such that rotation is free and engagement and combination are airtight with respect to another end bracket.

Description

Description FIRE CLOSURE SHUTTER

Technical Field

[1] The present invention relates to a fire closure shutter, and more particularly, to a fire closure shutter for, when a fire occurs, shutting a passage in a building, allowing life refuge using an emergency exit, and preventing spreading of flame and toxic gas caused by the fire. Background Art

[2] In general, a fire closure shutter is installed within a building. At normal time, the fire closure shutter shuts an entry of an outsider into a specific space whereas, when a fire occurs, preventing spreading of flame, smoke, and toxic gas. Thus, a building of more than a predetermined size is obligated to install it under Fire Services Act.

[3] In particular, seeing various fire accidents in the building, when the fire occurs within the building, a person not getting out of the building is exposed to the flame as he/she is. Thus, the fire closure shutter should satisfy several requirements, such as fire resistance, rupture resistance, and smoke stopping function, in fire resistance test and rupture resistance test based on the assumption of fire circumstances. These requirements are very critical criteria in evaluating performance and safety and minimizing human and physical damages.

[4] Accordingly, the fire closure shutter has to satisfy requirements such as fire resistance, rupture resistance, and smoke stopping function even for a variety of parts such as a door hinge bracket, a shield bracket, and an end bracket as well as a plurality of slats simply constituting the fire closure shutter.

[5] FIG. 1 illustrates an example of a conventional fire closure shutter (S) where a variety of parts such as a door hinge bracket 10, a shield bracket 40, and an end bracket 30 are installed. As shown, the door hinge bracket 10 is installed at the fire closure shutter 10. The door hinge bracket 10 performs a hinge function and a shield function such that it can open and close an emergency exit (D). The shield bracket 20 is installed to shield a gap between the fire closure shutter (S) and the emergency exit (D). The shield bracket 20 performs a function of end reinforcement and smoke stopping at a slat (Dl) of the emergency exit (D). The end bracket 30 is installed at both ends of a slat (Sl) of the fire closure shutter (S). The end bracket 30 performs a function of reinforcement and smoke stopping at the slat (Sl) of the fire closure shutter (S).

[6] FIG. 2 is an exploded view of an "A" part of FIG. 1, illustrating a detail of the door hinge bracket 10 installed at the conventional fire closure shutter (S). The door hinge bracket 10 has a structure in which first and second door hinge brackets 11 and 16 are hinged and combined by common pin and spring (not shown) installed inside.

[7] First, the first door hinge bracket 11 of the door hinge bracket 10 integrally includes a fixing plate 12 fixed to and installed at the slat (Sl) of the fire closure shutter (S) using spot welding, an upper smoke stopping plate 13 having a bent fragment 14, and a lower smoke stopping plate 15. The second door hinge bracket 16 integrally includes a fixing plate 17 fixed and installed using the spot welding, a side smoke stopping fragment 18, and a lower smoke stopping fragment 19.

[8] However, in view of a characteristic of production based on a casting process, the side smoke stopping fragment 18 of the second door hinge bracket 16 is easily deformedin a cooling process of the door hinge bracket 10 installed at the conventional fire closure shutter (S). Thus, there is a drawback that as shown in FIG. 3, the side smoke stopping fragment 18 is not adhered to a banding part (D2) of the emergency exit (D), thereby generating a gap (G) and causing a difficulty in its assembly work.

[9] In other words, the side smoke stopping fragment 18 of the second door hinge bracket 16 has a protrusive thin plate shape and thus, is easily deformed as it is leaned to one side by self weight in the cooling process due to a characteristic of shape. The deformed side smoke stopping plate 18 being assembled without correction, as shown in FIG. 3, it is not adhered to a side surface of the banding part (D2) of the emergency exit (D), thereby causing a drawback of deteriorating a smoke stopping function and an assembly of the fire closure shutter (S).

[10] Thus, in a conventional art, the deformed side smoke stopping plate 18 is hit and corrected one by one using a hammer to correct the deformation of the side smoke stopping plate 18. But, due to a characteristic of the second door hinge bracket 16 based on casting production, all of the side smoke stopping plates 18 should be corrected one by one by manual work and thus, a productivity of the door hinge bracket 10 is greatly deteriorated.

[11] Further, the conventional art does not provide a means for easily combining the door hinge brackets 10 with each other in a process of installing a plurality of the door hinge brackets 10 at the fire closure shutter (S), thereby causing a drawback of inconvenience that a worker adjusts the plurality of door hinge brackets 10 one by one in position, fixing and installng them using the spot welding. Thus, there occurs a drawback that a workability of the fire closure shutter (S) is deteriorated and an installation time gets longer.

[12] Meantime, the shield bracket 20 in detail shown in FIG. 1 shields the gap between the fire closure shutter (S) and the emergency exit (D). The shield bracket 20 is of a structure in which it is fixed to and installed at an end of the slat (Sl) of the fire closure shutter (S) and an end of the slat (Dl) of the emergency exit (D) using the spot welding.

[13] However, the shield bracket 20 installed at the conventional fire closure shutter (S) mostly is of a structure in which synthetic resin material is molded to a thin steel plate. Thus, there occurs a drawback that the synthetic resin material is burned and easily thermally deformed by flame when the fire occurs. There occurs a lethal drawback that heat resistance and smoke stopping function of the fire closure shutter (S) are greatly deteriorated, and it is difficult to normally open and close the emergency exit (D).

[14] The conventional shield bracket 20 being installed at the slat (Dl) of the emergency exit (D), respectively, its installation is not mutually airtight. Thus, there occurs a drawback that even after the installation of the shield bracket 20, the emergency exit (D) is sagged wholly.

[15] The reason will be described in more detail. A plurality of slats (Dl) are combined with each other using the banding part (D2), and a relatively great combination tolerance is set to the banding part (D2) for smooth combination. The plurality of slats (Dl) being combined, the combination tolerance causes the emergency exit (D) to sag by self weight.

[16] Thus, the plurality of shield brackets 20 being more airtightly combined, a phenomenon of sag caused by the self weight of the emergency exit (D) can be prevented. But, the conventional shield brackets 20 are airtightly combined with each other and thus, cannot correct the combination tolerance between the slats (Dl). Accordingly, there occurs a drawback that the phenomenon of sag of the emergency exit (D) is caused by the self weight, and a separate anti-sag member (not shown) should be additionally installed at a lower end of the emergency exit (D).

[17] Further, in the conventional art, there is not provided a means for easily combining the shield brackets 20 with each other at the time of installing the shield brackets 20 at the fire closure shutter (S) and the emergency exit (D), thereby causing a drawback of inconvenience that the worker minutely adjusts the plurality of shield brackets 20 one by one in position, fixing and installng them using the spot welding. Thus, there occurs a drawback that a workability of the shield bracket 20 is deteriorated and an installation time gets longer.

[18] FIG. 4 is an exploded view of a "C" part of FIG. 1, illustrating the end bracket installed at the conventional fire closure shutter. As shown, the end brackets 30 are not installed at both ends of all the slats (Sl) of the fire closure shutter (S). The end brackets 30 are alternately fixed and installed by welding, and prevent the plurality of slats (Sl) from being slid and separated left/right.

[19] However, in the end bracket 30 for the conventional fire closure shutter, there is a drawback that the smoke stopping function cannot be expected in view of its structure of being alternately installed at the slat (Sl), and both ends of the slat (Sl) of the fire closure shutter (S) cannot be firmly reinforced.

[20] As shown in FIG. 5, the end bracket 30 of the conventional fire closure shutter is of a structure in which synthetic resin is coated on a banding shaped thin steel plate. Thus, there occurs a drawback that the end bracket 30 is easily burned and deformed by flame, thereby losing the smoke stopping function. Thus, opening and closing of the emergency exit (D) and operation of the fire closure shutter (S) are not normally implemented.

[21] In the conventional art, the end bracket 30 being installed at the slat (Dl) of the emergency exit (D), its installation is not mutually airtight. Accordingly, like the shield bracket 20, there occurs a drawback that even after the installation of the end bracket 30, the emergency exit (D) is sagged wholly.

[22] In addition, when the fire occurs, the conventional fire closure shutter (S) is heated by flame at high temperature. Thus, not only the fire closure shutter (S) but also the emergency exit (D) of the fire closure shutter (S) is thermally deformed. In this process, there occurs a drawback that parts, such as a spring (not shown), inside the door hinge bracket 10 installed at the emergency exit (D) are molten or greatly deforemd and damaged, thereby causing unintentional opening of the emergency exit (D).

[23] Accordingly, the conventional fire closure shutter (S) has a serious defect of not well preventing spreading of smoke and flame due to its great weakness to flame when the fire occurs.

[24] As described above, the conventional fire closure shutter (S) has a drawback that, despite installation of the door hinge bracket 10, the shield bracket 20, and the end bracket 30, many gaps are generated, thereby greatly deteriorating the smoke stopping function, and each part cannot be easily installed with simplicity and convenience, and the phenomenon of sag of the emergency exit (D) is also caused.

[25] The conventional fire closure shutter has a serious drawback that it does not normally operate as the parts are deformed or burned by flame when the fire occurs and thus, it does not well cut off the spreading of flame and smoke in its fundamental role.

Disclosure of Invention

Technical Problem

[26] Accordingly, the present invention is directed to a fire closure shutter that substantially obviates one or more of the problems due to limitations and disadvantages of the related art.

[27] An object of the present invention is to provide a fire closure shutter in which a door hinge bracket, a shield bracket, and an end bracket are airtightly combined and installed, thereby greatly improving a smoke stopping function of the fire closure shutter, allowing a prompt installation work with simplicity and convenience, and preventing a phenomenon of sag of an emergency exit.

[28] Another object of the present invention is to provide a fire closure shutter in which a performance of fire closure can be normally implemented without deformation caused by fire and impact, owing to shapes and an airtight combination structure of a door hinge bracket, a shield bracket, and an end bracket.

[29] A further object of the present invention is to provide a fire closure shutter for, when a fire occurs, automatically locking an emergency exit, thereby preventing opening of the emergency exit. Technical Solution

[30] To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, there is provided a fire closure shutter in which a door hinge bracket is connected and installed between a slat of the fire closure shutter and a slat of an emergency exit to open and close the emergency exit, a shield bracket is installed between the slat of the fire closure shutter and the slat of the emergency exit to shield a gap between the emergency exit and the fire closure shutter, and end brackets are installed at both ends of the fire closure shutter,

[31] wherein the door hinge bracket includes first and second door hinge brackets and a hinge unit in which airtight shielding is provided,

[32] wherein the shield bracket comprises first and second shield brackets having combination parts and combination grooves such that rotation is free and engagement and combination are airtight with respect to another shield bracket, and

[33] wherein the end bracket comprises combination parts and combination grooves such that rotation is free and engagement and combination are airtight with respect to another end bracket.

[34] It is desirable that the first door hinge bracket includes a fixing plate fixed to and installed at the slat of the fire closure shutter, a hinge arm and upper and lower plates provided at one side of the fixing plate and having pin holes, an upper smoke stopping plate provided at the upper plate, a combination part provided at the upper smoke stopping plate and having a combination groove, and a lower smoke stopping plate provided at a lower side of the lower plate and having a combination fragment,

[35] the second door hinge bracket includes a fixing plate fixed to and installed at the slat of the emergency exit, a cover provided at one side of the fixing plate, hinge arms provided at both sides of a lower surface of the cover and having pin holes, a combination part provided in an up direction of the cover and having a combination groove, and a lower smoke stopping fragment provided in a down direction of the cover and having a combination fragment, and

[36] the hinge unit includes springs positioned at both sides of the hinge arm, and a pin combined to the pin holes and the springs.

[37] The first door hinge bracket can include a fixing plate fixed to and installed at the slat of the fire closure shutter, a cover provided at one side of the fixing plate, a combination part provided at one side of an upper part of the cover and having a combination groove, a lower smoke stopping plate provided at a lower part of the cover and having a combination fragment, a hinge tube insertion groove provided at a lower surface of the cover, and hinge arms provided at both sides of the hinge tube insertion groove and having hinge holes and pin holes,

[38] the second door hinge bracket can include a fixing plate fixed to and installed at the slat of the emergency exit, a hinge tube provided at one side of the fixing plate and having a hinge hole and a pin hole, a combination part provided in an up direction of the hinge tube and having a combination groove, and a lower smoke stopping plate provided in a down direction of the hinge tube and having a combination fragment, and

[39] the hinge unit can include a hinge pin having a spring combination groove and a pin combination groove, a torsion control pin having a head groove, a spring combination groove, and a pin combination groove, a spring combined between the hinge pin and the torsion control pin, and a fixing pin combined to the pin hole and fixing the hinge pin and the torsion control pin.

[40] The first door hinge bracket can include a fixing plate fixed to and installed at the slat of the fire closure shutter, a first hinge combination part provided at one side of the fixing plate, a hinge tube combination groove provided at a rear surface of the first hinge combination part, a hinge pin insertion groove and a hinge pin insertion hole provided in up and down directions of the hinge tube combination groove, a curved surface protrusion part provided at one side surface of the first hinge combination part, upper and lower combination parts and upper and lower combination grooves provided at upper and lower ends of the first hinge combination part such that rotation is easy and joint combination is airtight with respect to another shield bracket, and a step jaw provided at one side end of the first hinge combination part,

[41] the second door hinge bracket can include a fixing plate fixed to and installed at the slat of the emergency exit, a second hinge combination part provided at one side of the fixing plate, a hinge tube having a pin hole and provided at one side of the second hinge combination part such that it can be combined to the hinge tube combination groove, a curved surface groove and a lower combination part provided at upper and lower surfaces of the second hinge combination part, and a step jaw provided at a part of a whole surface of the second hinge combination part such that it can be combinated with the step jaw, and [42] the hinge unit can include a hinge pin combined to a hinge pin insertion groove and having a spring combination groove, a torsion control pin having a head groove, a spring combination groove, and a pin combination groove, a spring combined to the spring combination grooves of the hinge pin and the torsion control pin, and a fixing pin combined to the pin hole.

[43] It is desirable that the first shield bracket includes a fixing plate fixed to and installed at the slat of the fire closure shutter, an end bar provided at one side of the fixing plate, combination parts having arc shapes and provided at upper and lower ends of the end bar, combination grooves provided at one surfaces of the combination parts to have the same shape as the arc shape of the combination part such that rotation is free and engagement and combination is airtight with respect to combination parts of another first shield bracket, and a shield plate provided at one side of the end bar, and

[44] the second shield bracket includes a fixing plate fixed to and installed at the slat of the emergency exit, an end bar provided at one side of the fixing plate, combination parts having arc shapes and provided at upper and lower ends of the end bar, combination grooves provided at one surfaces of the combination parts to have the same shape as the arc shape of the combination part such that rotation is free and engagement and combination is airtight with respect to combination parts of another second shield bracket, and a shield plate provided at one side of the end bar such that it is overlapped with the shield plate of the first shield bracket.

[45] It is desirablet that the shield plate of the first shield bracket include a reinforcement part having a bent shape, and step jaws provided at upper and lower ends thereof such that it can be engaged and combined with a shield plate of another first shield bracket, and

[46] the second shield plate 445 of the second shield bracket include a reinforcement part having a banding shape, and step jaws provided at upper and lower ends thereof such that it can be engaged and combined with a shield plate of another second shield bracket.

[47] It is desirable that any one of the first and second shield brackets has a magnet.

[48] It is desirable that the shield bracket further includes an emergency automatic locking device to prevent the emergency exit from being opened when a fire occurs.

[49] The emergency automatic locking device includes a case fixed to and installed at the slat of the emergency exit; a spring built in the case; a locking rod inserted into the case and having a spring jaw and a nurling such that it can protrude through a through- hole provided at the end bar of the second shield bracket; a cap installed at an entrance of the case; and a fuse installed between the nurling of the locking rod and the cap, and molten by heat when the fire occurs, thereby unlocking the locking rod.

[50] It is desirable that the case has a locking protrusion at its inner part, and a bush is installed at and locked by the locking protrusion such that it can support the spring, and the fuse is of soft lead that is easily molten by flame.

[51] It is desirable that the emergency automatic locking device includes a housing fixed to and installed at the fire closure shutter and having a guide groove and a cover fragment; a locking lever installed and transferred between the guide groove and the cover fragment; a control screw connecting to the locking lever such that it can control an amount of transfer of the locking lever; a spring combining to the control screw and elastically pressing the locking lever; and a fuse molten and eliminated by heat when the fire occurs, and combined to the control screw such that it increases the amount of transfer of the control screw and strengthens a locking state of the locking lever.

[52] It is desirable that the housing has a stopper and a through-hole at the cover fragment to facilitate transfer and control of the locking lever, and that the locking lever has a guide hole, a screw hole, and a spring insertion hole to combine the stopper, the control screw, and the spring, and that the locking lever has a square bar shape in appearance, and is sharply shaped to have a curved surface part at a front end where locking is implemented.

[53] It is desirable that the end bracket includes a fixing plate fixed to and installed at the slat of the fire closure shutter, an end bar provided at one side of the fixing plate, combination parts having arc shapes and provided at upper and lower ends of the end bar, and combination grooves provided at partial surfaces of the combination parts to have the same shape as the arc shape of the combination part such that rotation is free and engagement and combination is airtight with respect to combination parts of another end bracket.

[54] It is desirable that the emergency exit has a smoke stopping stopper for airtightly shielding the gap between the fire closure shutter and the emergency exit, and that the smoke stopping stopper has a banding part of a type surrounding the slat of the fire closure shutter, and that the banding part is polygonal and round shaped.

Advantageous Effects

[55] As described above, the present invention has an effect of maximizing the air- tightness of a fire closure shutter using a door hinge bracket, a shield bracket, and an end bracket with airtight engagement and installation or an improved smoke stopping function, thereby greatly improving a performance of smoke stopping of the fire closure shutter.

[56] In the present invention, the door hinge bracket has combination parts having combination grooves, or arc shaped upper and lower combination parts and upper and lower combination grooves. Thus, due to a characteristic of shape, the door hinge bracket is not deformed in a casting producing and cooling process. Accordingly, the door hinge bracket is adhered to a banding part of a slat, thereby greatly improving the smoke stopping function of the fire closure shutter, and greatly reducing even fraction defective in its production and installation process.

[57] In the present invention, the door hinge bracket, the shield bracket, and the end bracket are based on a structure where they are airtightly engaged and combined with each other with a small tolerance due to the combination part and the combination groove. Thus, there is a remarkable effect that the fire closure shutter can be kept in a firm state without deformation even by external physical impact or flame, thereby preventing a phenomenon of sag of slats of the fire closure shutter and an emergency exit.

[58] In the present invention, a magnet is installed at the shield bracket and thus, there is an effect that when the emergency exit is closed, it can be kept in a closed state until a physical force is applied to the emergency exit, thereby easily managing opening and closing of the emergency exit.

[59] In the present invention, an emergency automatic locking device is installed at the slat and thus, there is a very useful effect that even when flame, hot wind, or thermal deformation are caused by the occurrence of a fire, the emergency exit is prevented from being opened, thereby improving a performance of fire closure of the fire closure shutter.

[60] In the present invention, there is a useful effect that a gap between the fire closure shutter and the emergency exit is airtightly cut off using a smoke stopping bracket, thereby greatly improving the smoke stopping function of the fire closure shutter. Brief Description of the Drawings

[61] FIG. 1 is a front view illustrating a conventional fire closure shutter;

[62] FIG. 2 is an exploded view of an "A" part of FIG. 1, illustrating a door hinge bracket installed at a conventional fire closure shutter;

[63] FIG. 3 is a cross sectional view taken along a line B-B' of FIG. 2;

[64] FIG. 4 is an exploded view illustrating a "C" part of FIG. 1 showing an end bracket installed at a conventional fire closure shutter;

[65] FIG. 5 is a cross sectional view taken along a line D-D' of FIG. 4;

[66] FIG. 6 is a front view illustrating a fire closure shutter having a door hinge bracket, a shield bracket, and an end bracket according to the present invention;

[67] FIGL. 7 is an exploded perspective view illustrating a door hinge bracket installed at a fire closure shutter according to the present invention;

[68] FIG. 8 is a perspective view illustrating an installation state of a door hinge bracket;

[69] FIG. 9 is a plan and cross sectional view of a main part of a door hinge bracket, illustrating a combination state of a combination part and a combination groove in the door hinge bracket; [70] FIG. 10 is a perspective view illustrating a shield bracket installed at a fire closure shutter and an installation state thereof according to the present invention; [71] FIG.11 is an exploded vertical sectional view illustrating an "E" part of FIG. 10;

[72] FIG. 12 is a left side view of a shield bracket illustrating a state where rotation is free and engagement and combination are airtight between the shield brackets; [73] FIGS. 13 and 14 are a perspective view and a plan view of an installation state of a shield bracket illustrating a state where magnet is installed at a shield bracket; [74] FIG. 15 is a perspective view illustrating an end bracket installed at a fire closure shutter and an installation state thereof according to the present invention; [75] FIG. 16 is a left side view of an end bracket illustrating a state where rotation is free and engagement and combination are airtight between the end brackets; [76] FIGS. 17 and 18 are an exploded perspective view illustrating a door hinge bracket installed at a fire closure shutter, and a perspective view illustrating an installation state thereof according to another exemplary embodiment of the present invention; [77] FIG. 19 is a plan and cross sectional view of a main part illustrating a combination state of a combination part and a combination groove in the door hinge bracket of FIG.

17; [78] FIGS. 20, 21, 22, and 23 are an exploded perspective view, a plan view, and a rear view illustrating a door hinge bracket installed at a fire clousre shutter, and a perspective view illustrating an installation state thereof according to another exemplary embodiment of the present invention; [79] FIG. 24 is a left side view of a door hinge bracket illustrating a state where rotation is free and engagement and combination are airtight between the door hinge brackets of FIG. 20; [80] FIGS. 25 and 26 are plan and cross sectional views illustrating an operation state of the door hinge bracket of FIG. 20; [81] FIGS. 27 and 28 are cross sectional views illustrating an installation state of an emergency automatic locking device installed at a fire closure shutter according to the present invention; [82] FIGS. 29 and 30 are a front view of a fire closure shutter and a plan cross sectional view of an installation state thereof illustrating an emergency automatic locking device according to another exemplary embodiment of the present invention; [83] FIGS. 31 and 32 are an exploded perspective view illustrating another emergency automatic locking device installed at a fire closure shutter, and a front and cross sectional view illustrating an installation state thereof according to the present invention; [84] FIGS. 33, 34, and 35 are plan and cross sectional views illustrating an operation state of the emergency automatic locking device of FIG. 31 ;

[85] FIGS. 36 and 37 are a perspective view and a vertical cross sectional view illustrating a smoke stopping stopper installed at a fire closure shutter according to the present invention; and

[86] FIGS. 38 and 39 are vertical cross sectional views illustrating a smoke stopping stopper of FIG. 36 according to another exemplary embodiment of the present invention.

[87] <Description of major symbols of the above Figures>

[88] 100 : door hinge bracket

[89] 110,200,300 : first door hinge bracket

[90] 115,145,210,250,310,340 : fixing plate

[91] 116,146,211,251,311,341 : embossing

[92] 117,147,212,252,312,342 : connection hole

[93] 118,151 : hinge arm 119,152 : pin hole

[94] 120,121 : upper and lower plates

[95] 125 : upper smoke stopping plate

[96] 130,155,220,260 : combination part

[97] 131,156,221,261 : combination groove

[98] 135,225 : upper smoke stopping plate

[99] 136,161,226,266 : combiination fragment

[100] 140,240,330 : second door hinge bracket

[101] 150,215 : cover

[102] 160,265 : lower smoke stopping fragment

[103] 170: spring 180 : pin

[104] 230 : hinge tube insertion groove 231 : hinge arm

[105] 232,256 : hinge hole 233,257,353 : pin hole

[106] 255 : hinge tube 270,360 : hinge pin

[107] 271,277,361,372 : spring combination groove

[108] 272,278,373 : pin combination groove

[109] 275,370 : torsion control pin 276,371 : head groove

[110] 280,380 : spring 290,390 : fixing pin

[111] 311,341 : reinforcement part

[112] 320 : first hinge combination part

[113] 321 : curve surface protrusion part

[114] 322 : hinge pin insertion groove

[115] 323 : hinge pin insertion hole

[116] 324 : hinge tube combination groove

[117] 325,327 : upper and lower combination parts [118] 326,328 : upper and lower combination grooves

[119] 329,356 : step jaw

[120] 350 : second hinge combination part

[121] 351 : curved surface groove 352 : hinge tube

[122] 354 : upper combination groove

[123] 355 : lower combination groove 400 : shield bracket

[124] 410 : first shield bracket 415,435 : fixing plate

[125] 416,436 : embossing 417,437 : connection hole

[126] 420,440 : end bar 421,441 : combination part

[127] 422,442 : combination groove 425,445 : shield plate

[128] 426,446 : reinforcement part 427,447 : step jaw

[129] 430 : second shield bracket 443, 525 : through-hole

[130] 450 : magnet 500 : end bracket

[131] 510 : fixing plate 511 : embossing

[132] 512 : connection hole 520 : end bar

[133] 521 : connection part 522 : connection groove

[134] 600 : emergency automatic locking device

[135] 610 : case 611 : locking protrusion

[136] 612 : fixing bracket 615 : bush

[137] 620 : spring 630 : locking rod

[138] 631 : step jaw 632 : nurling

[139] 640 : cap 650 : fuse

[140] 700 : housing 701 : through-hole

[141] 702 : guide groove 703 : cover fragment

[142] 704 : stopper 705 : hole

[143] 710 : locking lever 711 : guide hole

[144] 712 : screw hole 713 : spring insertion hole

[145] 714 : curved surface part 720 : control screw

[146] 730 : spring 740 : fuse

[147] 750 : washer 800 : shield stopper

[148] 810 : banding part D : emergency exit

[149] D 1 ,S 1 : slat D2 : banding part

[150] D3,S3 : embossing D4,S4 : connection hole

[151] S : fire closure shutter S2 : banding part

[152] N : screw P : post

Best Mode for Carrying Out the Invention

[153] FIG. 6 is a front view illustrating a fire closure shutter according to the present invention. As shown, the inventive fire closure shutter (S) includes a door hinge bracket 100, a shield bracket 400, and an end bracket 500.

[154] First, as shown in FIG. 7, the door hinge bracket 100 is installed between a slat (D) of the fire closure shutter and a slat (Dl) of an emergency exit (D) to open and close the emergnecy exit (D). The door hinge bracket 100 includes first and second door hinge brackets 110 and 140 and a hinge unit.

[155] The first door hinge bracket 110 includes a fixing plate 115 having a plurality of embossings 116 and connection holes 117 on a surface thereof such that it can be simply and conveniently fixed to and installed at the slat (Sl) of the fire closure shutter (S) with embossing (S3) and connection hole (S4), using a bolt (B). A hinge arm 118 having a pine hole 119 is provided at a center of one side of the fixing plate 115. An upper plate 120 and a lower plate 121 having pin holes 119 are provided at upper and lower parts of the hinge arm 118, respectively, to be integrated with the fixing plate 115. An upper smoke stopping plate 125 is integrally provided at an upper part of the upper plate 120. A combination part 130 having a combination groove 131 is integrally provided at a left side of the upper smoke stopping plate 125. A lower smoke stopping plate 135 having a combination fragment 136 protruded is integrally provided at a lower part of the lower plate 121.

[156] The second door hinge bracket 140 is symmetrical with the first door hinge bracket

110. The second door hinge bracket 140 includes a fixing plate 145 having a plurality of embossings 146 and connection holes 147 on a surface thereof such that it can be simply and conveniently fixed to and installed at the slat (Dl) of the emergency exit (D) with embossing (S3) and connection hole (S4), using a bolt (B). A cover 150 is integrally provided at one side surface of the fixing plate 145. Hinge arms 151 having pin holes 152 are provided at both sides of a bottom surface of the cover 150. A combination part 1455 having a combination groove 156 is integrally provided at an upper part of the cover 150. A lower smoke stopping fragment 160 having a combination fragment 161 protruded is integrally provided at a lower part of the cover 150.

[157] The hinge unit is comprised of a spring 170 and a pin 180. The springs 170 are positioned at both sides of the hinge arm 118, and the pin 180 is combined with the pin holes 119 and 152 and the spring 170.

[158] As shown in FIGS. 8 and 9, the above constructed door hinge bracket 100 is easily and airtightly combined with and installed at another door hinge bracket 100 by combination of the combination grooves 131 and 156 and the combination fragments 136 and 161 and by overlapping of the upper and lower smoke stopping plates 125 and 135 and the lower smoke stopping fragment 160. Thus, the door hinge bracket 100 improves the smoke stopping function of the fire closure shutter (S). [159] In the door hinge bracket 100, the combination grooves 131 and 156 being simply combined with the combination fragments 136 and 161, the embossings 116 and 146 of the fixing plates 115 and 145 are engaged and connected with the embossings (D3)(S3) of the slats (Dl)(Sl) using the bolt (B). Thus, an installation work of the door hinge bracket 100 can be promptly performed with simplicity and convenience.

[160] In particular, the first and second door hinge brackets 110 and 140 are of a type where the combination parts 130 and 155 are approximately block shaped, and the combination grooves 131 and 135 are provided within the combination parts 130 and 155. Thus, deformation is not generated in a casting producing and cooling process in view of a characteristic of shape. Thus, as shown in FIG. 9, when the first and second door hinge brackets 110 and 140 are fixed to and installed at the slats (Dl)(Sl), the combination parts 130 and 155 are airtightly adhered to banding parts (D2)(S2), thereby improving the smoke stopping function of the fire closure shutter (S).

[161] As shown in FIG. 10, the shield bracket 400 is installed between the slat (Sl) of the fire closure shutter (S) and the slat (Dl) of the emergency exit (D) to shield a gap between the emergency exit (D) and the fire closure shutter (S). The shield bracket 400 includes first and second shield brackets 410 and 430 such that rotation is free and engagement and combination are airtight with respect to another shield bracket 400.

[162] The first shield bracket 410 includes a fixing plate 415 having a plurality of embossings 416 and connection holes 417 on its surface such that it can be simply and conveniently fixed to and installed at the slat (Sl) of the fire closure shutter (S) with the embossings (S3) and the connection holes (S4), using a bolt (B). An end bar 420 is integrally provided at a left side of the fixing plate 415.

[163] Combination parts 421 having arc shapes at upper and lower ends of the end bar

420 are provided at the upper and lower ends of the end bar 420. Combination grooves 422 of the same as the arc shapes of the combination parts 421 are provided on left surfaces or right surfaces of the combination parts 421, respectively, such that rotation is free and engagement and combination are airtight with respect to a combination part

421 of another first shield bracket 410.

[164] A shield plate 425 is integrally provided on a left surface of the end bar 420, and a bent shaped reinforcement part 426 is provided on a front surface of the shield plate 425, and step jaws 427 are provided at upper and lower ends of the shield plate 425 such that rotation is free and engagement and combination are airtight with respect to a step jaw 427 of another first shield bracket 410 as shown in FIG. 11.

[165] The second shield bracket 430 includes a fixing plate 435 having a plurality of embossings 436 and connection holes 437 on its surface such that it can be simply and conveniently fixed to and installed at the slat (Dl) of the emergency exit (D) with the embossings (436) and the connection holes (437), using a bolt (B). An end bar 440 is integrally provided at a right side of the fixing plate 435. [166] Combination parts 421 having arc shapes at upper and lower ends of the end bar

440 are provided at the upper and lower ends of the end bar 440. Combination grooves 442 of the same as the arc shapes of the combination parts 441 are provided on right surfaces or left surfaces of the combination parts 441 such that rotation is free and engagement and combination are airtight with respect to a combination part 441 of another second shield bracket 430.

[167] A shield plate 445 is integrally provided at a right side of the end bar 440 such that it can be overlapped with the shield plate 425 of the first shield bracket 410. A band shaped reinforcement part 446 is provided at a right side of the shield plate 445, and step jaws 447 are provided at upper and lower ends of the shield plate 445 such that engagement and combination can be airtight with respect to the shield plate 445 of another second shield bracket 430 as shown in FIG. 11.

[168] As shown in FIG. 10, in the above constructed shield bracket 400 according to the present invention, the arc shaped combination parts 421 and 441 and combination grooves 422 and 442 are provided at upper and lower parts of the end bars 420 and 440. Thus, the arc shaped combination parts 421 and 441 and combination grooves 422 and 442 are easily and airtightly engaged and combined with combination parts 421 and 441 and combination grooves 422 and 442 of another shield bracket 400.

[169] Accordingly, the combination parts 421 and 441 and the combination grooves 422 and 442 cut off airflow to the maximum owing to a characteristic of mutual engagement and combination structure based on the arc shape. Thus, the combination parts 421 and 441 and the combination grooves 422 and 442 maximize their air- tightness, and greatly improve the smoke stopping function. As shown in FIG. 12, rotation of the end bars 420 and 440 is free and thus, wiring of the fire closure shutter (S) can be also implemented with ease.

[170] As shown in FIG. 11, in the shield bracket 400 according to the present invention, the step jaws 427 and 447 are provided at the upper and lower ends of the shield plates 425 and 445 such that a plurality of the shield brackets 400 can be airtightly engaged with each other. Accordingly, the shield bracket 400 according to the present invention further cuts off the airflow owing to a characteristic of engagement and combination of the step jaws 427 and 447, thereby enhancing the airtightness and more improving the smoke stopping function.

[171] In the present invention, the plurality of shield brackets 400 are airtightly and precisely engaged and combined with each other using the combination parts 421 and

441 and the combination grooves 422 and 442. Thus, the plurality of shield brackets 400 serve to correct assembly tolerance (or combination tolerance) caused by an assembly of a plurality of slats (Dl) and provide a precise and airtight assmebly. In a detailed description, the slat (Dl) has a quitely large assembly tolerance in assembly between the slats (Dl) whereas, the shield brackets 400 are of a structure in which it is airtightly combined as engaged by the combination parts 421 and 441 and the combination grooves 422 and 442 and thus, are very small in assembly tolerance.

[172] Accordingly, the slat (Dl) is airtightly assembled depending on the shield bracket

400 having a small assembly tolerance due to a characteristic of being assembled together with the shield bracket 400. Therefore, the plurality of slats (Dl) are not spaced apart or sagged depending on their assembly tolerances, thereby not causing a phenomenon of sag of the emergency exit (D).

[173] The inventive shield bracket 400 is of an assembly type based on the engagement and combination of the arc shaped combination parts 421 and 441 and combination grooves 422 and 442, and is of a type uniting the embossings 416 and 436 of the fixing plates 415 and 435 with the embossings (D3)(S3) of the slats (D1)(D3) and then, connecting them by the bolt (B). Thus, the installation work of the shield bracket 400 can be promptly performed with simplicity and convenience.

[174] Owing to an airtight engagement and combination structure of the combination parts 421 and 441 and the combination grooves 422 and 442 and the reinforcement parts 426 and 446, the shield bracket 400 can be firmly kept in its shape and installation state, without deformation, against vibration or impact generated when the emergency exit (D) is vibrated or is opened or closed.

[175] The shield bracket 400 is undirectional and thus, in addition to those shown in FIG.

10, the first and second shield brackets 410 and 430 are exchanged in position with each other and installed, or the first and second shield brackets 410 and 430 are exchanged in position up/down and installed, thereby providing an advantage of making the installation work simple, convenient, and easy.

[176] FIGS. 13 and 14 illustrate a shield bracket 400 according to another exemplary embodiment of the present invention, and illustrate examples where a magnet 450 is built-in at a bottom surface of a shield plate 425 of a first shield bracket 410. Accordingly, in case an emergency exit (D) is closed, first and second shield brackets 410 and 430 are continuously kept in a mutual adhered state owing to the magnet 450 built in the first shield bracket 410.

[177] Therefore, as shown in FIG. 14, the emergency exit (D) is kept in a closed state until a user applies a physical force to open the emergency exit (D). Thus, the emergency exit (D) can be prevented from being unnecessarily opened.

[178] Further, the shield bracket 400 is casted and produced using steel material. Thus, the shield bracket 400 is strengthened in strength, thereby getting smooth an operation of a fire closure shutter (S) and the emergency exit (D) without thermal deformation at high temperature when a fire occurs. [179] As shown in FIG. 15, an end bracket 500 is installed at both ends of the fire closure shutter (S), and fixes a slat (Sl). The end bracket 500 includes a fixing plate 510 having a plurality of embossings 511 and connection holes 512 on its surface such that it can be simply and conveniently fixed to and install at the slat (Sl) of the fire closure shutter (S) having embossings (S3) and connection holes (S4), using a bolt (B).

[180] An end bar 520 is integrally provided at one side of the fixing plate 51, and combination parts 521 having arc shapes at upper and lower ends of the end bar 520 are integrally provided at upper and lower ends of the end bar 520. Combination grooves 522 of the same as the arc shapes of the combination parts 521 are provided at one surfaces of the combination parts 521 such that rotation is free and engagement and combination are airtight with respect to combination parts 521 of another end bracket 500.

[181] As shown in FIG. 15, the above described end bracket 500 is airtightly engaged and combined with another end bracket 500 using the arc shaped combination parts 521 and combination grooves 522, thereby cutting off airflow to the maximum and greatly improving a smoke stopping function of the fire closure shutter (S). As shown in FIG. 16, rotation of the end bracket 500 is free and thus, wiring of the fire closure shutter (S) can be also easily implemented.

[182] Like the shield bracket 400, the end bracket 500 prevents the plurality of slats (Sl) from being spaced apart due to their assembly tolerance and also, prevents a phenomenon of sag of the fire closure shutter (S). The end bracket 500 is of a type of uniting the embossing 511 of the fixing plate 510 with the embossing (S3) of the slat (Sl) and then connecting them using a bolt (B). Thus, its installation work can be promptly implemented with simplicity and convenience.

[183] Further, the inventive end bracket 500 is casted and produced using steel material.

Thus, the end bracket 500 is strengthened in strength, thereby getting smooth a function of the fire closure shutter (S) without thermal deformation caused by high temperature when the fire occurs. Mode for the Invention

[184] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to accompanying drawings.

[185] FIGS. 17, 18, and 19 illustrate a door hinge bracket 100 installed at a fire closure shutter (S) according to another embodiment of the present invention. As shown, the door hinge bracket 100 includes a first door hinge bracket 200, a second door hinge bracket 240, and a hinge unit.

[186] First, as shown in FIG. 17, the first door hinge bracket 200 includes a fixing plate

210 having a plurality of embossings 211 and connection holes 212 on its surface such that, as shown in FIG. 18, it can be simply and conveniently fixed to and installed at a slat (Sl) of the fire closure shutter (S) having embossings (S3) and connection holes (S4), using a bolt (B). A cover 215 is integrally provided at one side of the fixing plate 210. A combination part 220 having a combination groove 221 is provided at one upper side of the cover 215. A lower smoke stopping plate 225 having a combination fragment 226 protruded is provided at a lower part of the cover 215. A hinge tube insertion groove 230 is provided at a rear surface of the cover 215. Hinge arms 231 having hinge holes 232 and pin holes 233 are provided in the up/down direction of the hinge tube insertion groove 230, respectively.

[187] As shown in FIGS. 17 and 18, the second door hinge bracket 240 includes a fixing plate 250 having a plurality of embossings 251 and connection holes 252 on its surface such that it can be simply and conveniently fixed to and installed at the slat (Sl) of the emergency exit (S) having embossings (S3) and connection holes (S4), using a bolt (B). A hinge tube 255 having a hinge hole 256 and a pin hole 257 is provided at one side of the fixing plate 250. A combination part 260 having a combination groove 261 is provided in the up direction of the hinge tube 255. A lower smoke stopping plate 265 having a combination fragment 266 is provided in the down direction of the hinge tube 255.

[188] The hinge unit includes a hinge pin 270, a torsion control pin 275, a spring 280, and a fixing pin 290. The hinge pin 270 having a spring combination groove 271 and a pin combination groove 272 is inserted into the hinge hole 232 of the hinge arm 230. The torsion control pin 275 having a head groove 276, a spring combination groove 277, and a pin combination groove 278 is inserted into the hinge hole 232 of the hinge arm 231. The spring 280 is combined with the hinge pin 270 in such a manner that it is engaged with the spring combination groove 271 of the torsion control pin 275, and is positioned in the hinge tube 255. The fixing pin 290 having a screw thread on its lower circumference surface is combined to the pin combination grooves 272 and 278 of the hinge pin 270 and the torsion control pin 275 through the pin holes 233 and 257 of the hinge arm 230 and the hinge tube 255.

[189] As shown in FIGS. 18 and 19, the above constructed door hinge bracket 100 is of a type in which it is easily and airtightly combined with and installed at another door hinge bracket 100 by combination of the combination grooves 221 and 261 with the combination fragments 226 and 266 and by combination of the lower smoke stopping plate 225 and the lower smoke stopping fragment 265, thereby improving a smoke stopping function of the fire closure shutter (S).

[190] In the door hinge bracket 100, the combination grooves 221 and 261 being simply combined with the combination fragments 226 and 266, the embossings 211 and 251 of the fixing plates 210 and 250 are united and connected with the embossings (D3)(S3) of the slats (Dl)(Sl) by the bolt (B). Thus, an installation work of the door hinge brakcet 100 can be promptly implemented with simplicity and convenience.

[191] In the present invention, the combination parts 220 and 260 having the combination grooves 221 and 261 are provided at the first and second door hinge brackets 200 and 400 and thus, owing to a characteristic of their shapes, are not deformed in a casting producing and cooling process. Accordingly, in the present invention, as shown in FIG. 19, when outer surfaces of the combination parts 220 and 260 are installed at the slats (Dl)(Sl) of the fire closure shutter (S) and the emergency exit (D), they are adhered to banding parts (D2)(S2), thereby greatly improving the smoke stopping function of the fire closure shutter (S).

[192] The door hinge bracket 100 can rotate the torsion control pin 275 using a tool such as a driver (not shown), thereby setting an elastic strength of the torsion spring 280. After the setting of the elastic strength, the fixing pin 290 can be fitted into the pin combination groove 278 of the torsion control pin 275 through the pin hole 257, thereby fixing the torsion control pin 275. Accordingly, in the present invention, it is possible to suitably control a hinge force in a process of installing the door hinge bracket 100.

[193] Further, the inventive door hinge bracket 100 is casted and produced using steel material. Thus, the door hinge bracket 100 is strengthened in strength, thereby getting smooth operations of the fire closure shutter (S) and the emergency exit (D) without thermal deformation in high temperature when a fire occurs.

[194] FIGS. 20 to 26 illustrate a door hinge bracket 100 installed at a fire closure shutter according to another exemplary embodiment of the present invention. The door hinge bracket 100 mainly includes a first door hinge bracket 300, a second door hinge bracket 330, and a hinge unit.

[195] First, as shown in FIG. 20, the first door hinge bracket 300 includes a fixing plate

310 having a plurality of embossings 311 and connection holes 312 on its surface such that it can be simply and conveniently fixed to and installed at a slat (Sl) of the fire closure shutter (S) having embossings (S3) and connection holes (S4), using a bolt (B). A first hinge combination part 320 is provided at a right side of the fixing plate 311. A curved surface protrusion part 321 is provided on a right surface of the first hinge combination part 320. A hinge tube combination groove 324 is provided at a center of the curved surface protrusion part 321.

[196] A hinge pin insertion groove 322 and a hinge pin insertion hole 323 are provided in the up/down directions of the hinge tube combination groove 324, respectively. An upper combination part 325 and an upper combination groove 326 having curved surfaces are provided on an upper surface of the first hinge combination part 320. A lower combination part 327 and a lower combination groove 328 having curved surfaces are also provided on a lower surface of the first hinge combination part 320. The upper and lower combination parts 325 and 327 and the upper and lower combination grooves 326 and 328 have the curved surfaces having approximately arc shapes based on the same curvature such that they can be airtightly engaged and combined with upper and lower combination parts 325 and 327 and upper and lower combination grooves 326 and 328 of another door hinge bracket 100. A step jaw 329 is provided at a right end of the first hinge combination part 320 as shown in FIG. 21.

[197] The second door hinge bracket 330 includes a fixing plate 340 having a plurality of embossings 341 and connection holes 342 on its surface such that it can be simply and conveniently fixed to and installed at the slat (Sl) of the emergency exit (S) having embossings (D3) and connection holes (D4), using a bolt (B). A second hinge combination part 350 is provided at a right side of the fixing plate 340. A curved surface groove 351 is provided on a left surface of the second hinge combination part 350 to have the same curvature as that of the curved surface protrusion part 321.

[198] As shown in FIG. 22, the curved surface groove 351 has a hinge tube 352 having a pin hole 353 such that it can be combined to the hinge tube combination groove 324. An upper combination groove 354 having a curved surface is provided on an upper surface of the second hinge combination part 350. A lower combination part 355 having a curved surface is provided on a lower surface of the second hinge combination part 350. The curved surfaces of the upper combination groove 354 and the lower combination part 355 are provided to have the same curvature as curved surfaces of upper and lower combination grooves 326 and 327 of a first hinge bracket 300. As shown in FIG. 21, a step jaw 356 is provided in front of the second hinge combination part 350 such that it can be combined with the step jaw 329.

[199] The hinge unit includes a hinge pin 360, a torsion control pin 370, a spring 380, and a fixing pin 390. The hinge pin 360 having a spring combination groove 361 is combined to a hinge pin insertion hole 322. The torsion control pin 370 having a head groove 371, a spring combination groove 372, and a pin combination groove 373 is combined to a hinge pin insertion hole 323. The spring 380 is engaged and combined with the spring combination grooves 361 and 372 of the hinge pin 360 and the torsion control pin 370, and positioned in a hinge tube 352. The fixing pin 390 is combined to the pin hole 373 of the torsion control pin 370 through the pin hole 353 of the hinge tube 352.

[200] As shown in FIG. 23, in the above constructed door hinge bracket 100, the upper and lower combination parts 325 and 327 being simply combined with the upper and lower combination grooves 326 and 328, the embossings 311 and 341 of the fixing plates 310 and 340 are united with the embossings (D3)(S3) of the slats (Dl)(Sl) and then, the slats (Dl)(Sl) and the fixing plates 310 and 340 are connected and fixed by the bolt (B). Thus, an installation work of the door hinge brakcet 100 can be promptly implemented with simplicity and convenience.

[201] In particular, in the inventive door hinge bracket 100, the arc shaped upper and lower combination parts 325, 327 and 355 and upper and lower combination grooves 326, 328 and 354 are airtightly engaged and combined, by mutual curved surface contact, with upper and lower combination grooves 326, 328 and 354 and upper and lower combination parts 325, 327 and 355 of another door hinge bracket 100, thereby maximizing the airtightness. Accordingly, the smoke stopping function of the fire closure shutter (S) is greatly improved and, as shown in FIG. 21, an engagement and combination structure of the step jaws 329 and 356 is increased in airtightness, thereby more improving the smoke stopping function of the fire closure shutter (S).

[202] In the inventive door hinge bracket 100, owing to a characteristic where the upper and lower combination grooves 326, 328, and 354 and the upper and lower combination parts 325, 327, and 355 are airtightly engaged and combined with each other by a curved surface contact, as shown in FIG. 24, a rotation of the door hinge bracket 100 can be also free and the fire closure shutter (S) can be also wired with ease.

[203] Due to an elastic force of the built-in spring 380 and a combination of a step jaw

356, the inventive door hinge bracket 100 is subjected to an elastic force to keep a state of bending down a little more than a horizontal state as shown in FIG. 21. Accordingly, after the installation of the fire closure shutter (S), the door hinge bracket 100 keeps a closed state of the emergency exit (D) using a force to elastically adhere the emergency exit (D) to the fire closure shutter (S) by a predetermined angle (α).

[204] As shown in FIGS. 23, 25, and 26, when the inventive door hinge bracket 100 is installed at ends of the slats (Sl)(Dl), left surfaces or right surfaces of the upper and lower combination parts 325 and 327 are airtightly adhered to side surfaces of the banding parts (D2)(S2) of the slats (Dl)(Sl), thereby improving the smoke stopping function of the fire closure shutter (S).

[205] The inventive door hinge bracket 100 can rotate the torsion control pin 370 using a tool such as a driver (not shown), thereby controlling an elastic restoration force of the torsion spring 380. After the controlling of the elastic restoration force, the fixing pin 390 can be fitted into the pin combination groove 373 of the torsion control pin 370 through the pin hole 353 of the hinge tube 352, thereby fixing the torsion control pin 370. Accordingly, in the present invention, it is possible to suitably control a hinge force in a process of installing the door hinge bracket 100.

[206] Further, the inventive door hinge bracket 100 is casted and produced using steel material. Thus, the door hinge bracket 100 is strengthened in strength, thereby getting smooth an operation of the fire closure shutter (S) and the emergency exit (D) without thermal deformation in high temperature when a fire occurs.

[207] FIGS. 27 to 30 illustrate a fire closure shutter having an emergency automatic locking device according to another exemplary embodiment of the presnet invention. As shown, the emergency automatic locking device 600 installed at the fire closure shutter (S) mainly includes a case 610, a bush 615, a spring 620, a locking rod 630, a cap 640,and a fuse 650.

[208] First, the case 610 is fixed to and installed around a second shield bracket 430 in a slat (Dl) of an emergency exit (D). The case 610 is approximately cylindrical shaped, and has a lock protrusion 811 in a left internal. The case 610 is firmly fixed to and installed at the slat (Dl) of the emergency exit (D) through a separate fixing bracket 612. The second shield bracket 430 has a through-hole 443 at an end bar 440 to allow a passage of the locking rod 630.

[209] The bush 615 supporting the spring 630 is inserted into the case 650 and is locked by the locking protrusion 611.

[210] The spring 620 elastically pressing the locking rod 620 is inserted into the case 610.

[211] When a fire occurs, the locking rod 630 is drawn to prevent opening of the emergency exit (D). The locking rod 630 has a spring jaw 631 and a nurling 632, and is inserted into and installed in the bush 615 of the case 610.

[212] The cap 640 is connected and installed at an entrace of the case 610, and is inserted to and combined with the locking rod 630.

[213] The fuse 650 forcibly controls a transfer of the locking rod 630. In the present invention, the fuse 650 is formed of soft lead and has a bush shape, for example. The fuse 650 is pressed and installed between the nurling part 632 of the locking rod 630 and the cap 640.

[214] As shown in FIG. 27, in a normal state, the above constructed emergency automatic locking device 600 of the fire closure shutter keeps a forcible combined state of the locking rod 630 by the fuse 650. Thus, the locking rod 630 is not transferred toward the through-hole 443 despite the elastic pressing of the spring 620, thereby normally opening and closing the emergency exit (D) of the fire closure shutter (S).

[215] However, as shown in FIG. 28, when the fire occurs, an indoor temperature is greatly increased by a flame and thus, the fuse 650 formed of soft lead is molten by heat. Thus, the locking rod 630 passes through the through-hole 443 of the end bar 440 and is drawn by elastic pressing of the spring 620, and the emergency exit (D) is not opened owing to the drawn locking rod 620.

[216] Therefore, in the present invention, even though several parts of the fire closure shutter (S) are thermally deformed or damaged by the flame at the time of the occurrence of the fire, the automatically drawn locking rod 630 prevents the opening of the emergency exit (D), thereby surely preventing the spreading of flame and smoke. [217] It is desirable that the emergency automatic locking device 600 of the fire closure shutter (S) is increased or decreased in its number, and is installed with a suitable number depending on sizes of the fire closure shutter (S) and the emergency exit (D).

[218] FIGS. 29 and 30 illustrate another installation example of the emergency automatic locking device 600 installed at the fire closure shutter (S), and illustrate an example of installing the emergency automatic locking device 600 at the end of the slat (Dl) of the emergency exit (D).

[219] The emergency automatic locking device 600 has the same structure as FIG. 27.

However, there is a difference in that it is installed at a slat (Dl) end of an end bracket 500 part. In case where the emergency automatic locking device 600 is enabled depending on the occurrence of the fire, as shown in FIG. 30, the locking rod 630 passes through the through-hole 525 provided at the end bar 520 and then, is locked inside a post (P), thereby preventing the opening of the emergency exit (D).

[220] FIGS. 31 to 35 illustrate an emergency automatic locking device 600 according to another exemplary embodiment of the present invention. As shown, the emergency automactic locking device 600 mainly includes a housing 700, a locking lever 710, a control screw 720, a spring 730, and a fuse 740.

[221] First, as shown in FIG. 31, the housing 700 is installed at a fixing plate 435 of a second shield bracket 440 such that it can lock the emergency exit (D). The housing 700 has a plurality of through-holes 701 at both sides of its surface such that it can be connected with and on the fixing plate 435, using a bolt (B). The housing 700 has a guide groove 702 banded at a center of its surface, and has a cover fragment 703 on the guide groove 702. The cover fragment 703 has a stopper 704 whose part is bent downward, and a through-hole 705 provided on a rear surface thereof.

[222] The locking lever 710 installed between the guide groove 702 and the cover fragment 703 has a guide hole 711 provided by perforation at its center and inserting the stopper 704. A screw hole 712 and a spring insertion hole 713 are provided by perforation at a rear and inner side of the locking lever 710 to communicate with each other. The locking lever 710 is square bar shaped in appearance, and is sharply shaped to have a curved surface part 714 at its front end part where locking is done. Thus, as shown in FIG. 24, even when the emergency exit (D) is closed at normal time, it can be pushed out by human force such that it can be easily opened.

[223] The control screw 720 controlling the transfer of the locking lever 710 connects with the screwe hole 712 of the locking lever 710, and is installed together with a washer 750.

[224] The spring 730 elastically presses and transfers the locking lever 710 outside the through-hole 443 provided at the end bar 440 of the second shield bracket 430. The spring 730 is fitted to the control screw 720, and is inserted into the spring insertion hole 730 of the locking lever 710.

[225] In case where a temperature within a building rises to about 25O⁰C or more when the fire occurs, the fuse 740 is automatically molten and eliminated by heat, thereby locking the emergency exit (D) using the locking lever 710. In an exemplary embodiment of the present invention, the fuse 740 is formed of lead and approximately bush-shaped, and is combined to the control screw 720.

[226] As shown in FIG. 32, the above constructed emergency automatic locking device

600 suitably controls the locking lever 710 to protrude a little outside of the through- hole 443 of the end bar 440 using the control screw 720, for smooth opening and closing of the emergency exit (D). When the emergency exit (D) is closed using the locking lever 710 protruded a little, a shield plate 425 of the first shield bracket 400 installed at the fire closure shutter (S) presses the curved surface part 714 of the locking lever 710. The locking lever 710 overcomes the elastic force of the spring 730 using pressing of the shield plate 425, and is transferred inside the housing 700.

[227] Thus, the shield plate 425 of the first shield plate is adhered to the shield plate 445 of the second shield bracket 430, and the locking lever 710 is transferred to original position by the elastic restoration force of the spring 730, pressing and fixing the shield plate 425. Accordingly, the emergency exit (D) of the fire closure shutter (S) keeps the closed state owing to the locking lever 710 as shown in FIG. 33.

[228] As shown in FIG. 34, a user pushing out the emergency exit (D) by hands so as to open the closed emergency exit (D), the locking lever 710 overcomes the elastic force of the spring 730 by the shield plate 425 and is transferred inside the housing 700, thereby allowing the opening of the emergency exit (D).

[229] Further, in case where hot wind caused by the occurrence of the fire or impact from droppings is applied to the fire closure shutter (S) or the emergency exit (D), the hot wind and the impact are applied to a whole or a part of the fire closure shutter (S) excepting the emergency automatic locking device 600. Thus, an external force is con- centratively applied to the locking lever 710 part and thus, the emergency exit (D) is kept in the closed state.

[230] As such, in the inventive emergency automatic locking device 600, only when the emergency exit (D) is pushed out and opened by the human force, opening is implemented. Thus, even at normal time, the emergency exit (D) is kept in the closed state. When the hot wind or the impact caused by the occurrence of the fire is applied to the emergency exit (D), the opening of the emergency exit (D) is prevented. Accordingly, in the present invention, the spreading of the fire caused by the opening of the emergency exit (D) is more surely prevented before and after the fire occurs.

[231] In case where the fire occurs within the building, the temperature within the building rises to about 25O⁰C or more. The fuse 740 of the emergency automatic locking device 600 is molten and ran down due to a characteristic of lead material. Thus, as shown in FIG. 35, the locking lever 710 and the control screw 720 are transferred by a thickness of the fuse 740 using an elastic restoration force, thereby more protruding the locking lever 710 outside the through-hole 443 of the end bar 440. Thus, despite the hot wind, the impact from the droppings, and the thermal deformation of the fire closure shutter (S), the emergency exit (D) is not opened and is more firmly kept in its locking state, thereby more surely preventing the spreading of the fire.

[232] FIGS. 36 to 39 illustrate examples of a fire closure shutter (S) where a smoke stopping stopper 800 is installed. As shown in FIG. 37, the smoke stopping stopper 800 is formed using a metal plate strong against heat. In the smoke stopping stopper 800, its lower part is fixed to and installed at the slat (Dl) of the emergency exit (D) using spot welding or rivet, and an upper part has a banding part 810 of a type surrounding a banding part (S2) of the slat (Sl) of the fire closure shutter (S).

[233] As shown in FIGS. 37 and 38, the banding part 810 is polygonal shaped or round shaped to surround the banding part (S2) of the slat (Sl) and thus, it is preferably used for enhancing a smoke stopping function.

[234] As shown in FIG. 36, it is possible that the smoke stopping stopper 800 is fixed to and installed at the emergency exit (D) using welding but, as shown in FIG. 39, it is also possible to integrally provided at the slat (Dl).

[235] As shown in FIG. 37, in the above constructed smoke stopping stopper 800, in case where the emergency exit (D) is closed, the banding part 810 of the smoke stopping stopper 800 is of a type surrounding while surface-contacting with the banding part (S2) of the slat (Sl), thereby airtightly shielding between the slat (Sl) of the fire closure shutter (S) and the slat (Dl) of the emergency exit (D) and greatly improving the smoke stopping function of the fire closure shutter (S).

[236] Further, the smoke stopping stopper 800 has a characteristic of a simple and firm shield structure. Thus, the smoke stopping stopper 800 does not cause a difficulty in opening and closing the emergency exit (D) owing to a characteristic of being weakly forcibly fitted to the banding part (S2) of the slat (Sl) through the banding part 810.

[237] Furthermore, in the present invention, the smoke stopping stopper 800 is combined using the banding part (S2) of the fire closure shutter (S). Thus, the smoke stopping stopper 800 can prevent the slat (Dl) of the emergency exit (D) from sagging by self weight or from being bent and deformed by the external force.

[238] While the present invention has been described and illustrated herein with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made therein without departing from the spirit and scope of the invention. Thus, it is intended that the present invention covers the modifications and variations of this invention that come within the scope of the appended claims and their equivalents.

Claims

[1] A fire closure shutter in which a door hinge bracket is connected and installed between a slat of the fire closure shutter and a slat of an emergency exit to open and close the emergency exit, a shield bracket is installed between the slat of the fire closure shutter and the slat of the emergency exit to shield a gap between the emergency exit and the fire closure shutter, and end brackets are installed at both ends of the fire closure shutter, wherein the door hinge bracket comprises first and second door hinge brackets and a hinge unit in which airtight shielding is provided, wherein the shield bracket comprises first and second shield brackets having combination parts and combination grooves such that rotation is free and engagement and combination are airtight with respect to another shield bracket, and wherein the end bracket comprises combination parts and combination grooves such that rotation is free and engagement and combination are airtight with respect to another end bracket.

[2] The fire closure shutter according to claim 1, wherein the first door hinge bracket comprises a fixing plate fixed to and installed at the slat of the fire closure shutter, a hinge arm and upper and lower plates provided at one side of the fixing plate and having pin holes, an upper smoke stopping plate provided at the upper plate, a combination part provided at the upper smoke stopping plate and having a combination groove, and a lower smoke stopping plate provided at a lower side of the lower plate and having a combination fragment, wherein the second door hinge bracket comprises a fixing plate fixed to and installed at the slat of the emergency exit, a cover provided at one side of the fixing plate, hinge arms provided at both sides of a lower surface of the cover and having pin holes, a combination part provided in an up direction of the cover and having a combination groove, and a lower smoke stopping fragment provided in a down direction of the cover and having a combination fragment, and wherein the hinge unit comprises springs positioned at both sides of the hinge arm, and a pin combined to the pin holes and the springs.

[3] The fire closure shutter according to claim 1, wherein the first door hinge bracket comprises a fixing plate fixed to and installed at the slat of the fire closure shutter, a cover provided at one side of the fixing plate, a combination part provided at one side of an upper part of the cover and having a combination groove, a lower smoke stopping plate provided at a lower part of the cover and having a combination fragment, a hinge tube insertion groove provided at a lower surface of the cover, and hinge arms provided at both sides of the hinge tube insertion groove and having hinge holes and pin holes, wherein the second door hinge bracket comprises a fixing plate fixed to and installed at the slat of the emergency exit, a hinge tube provided at one side of the fixing plate and having a hinge hole and a pin hole, a combination part provided in an up direction of the hinge tube and having a combination groove, and a lower smoke stopping plate provided in a down direction of the hinge tube and having a combination fragment, and wherein the hinge unit comprises a hinge pin having a spring combination groove and a pin combination groove, a torsion control pin having a head groove, a spring combination groove, and a pin combination groove, a spring combined between the hinge pin and the torsion control pin, and a fixing pin combined to the pin hole and fixing the hinge pin and the torsion control pin.

[4] The fire closure shutter according to claim 1, wherein the first door hinge bracket comprises a fixing plate fixed to and installed at the slat of the fire closure shutter, a first hinge combination part provided at one side of the fixing plate, a hinge tube combination groove provided at a rear surface of the first hinge combination part, a hinge pin insertion groove and a hinge pin insertion hole provided in up and down directions of the hinge tube combination groove, a curved surface protrusion part provided at one side surface of the first hinge combination part, upper and lower combination parts and upper and lower combination grooves provided at upper and lower ends of the first hinge combination part such that rotation is easy and joint combination is airtight with respect to another shield bracket, and a step jaw provided at one side end of the first hinge combination part, wherein the second door hinge bracket comprises a fixing plate fixed to and installed at the slat of the emergency exit, a second hinge combination part provided at one side of the fixing plate, a hinge tube having a pin hole and provided at one side of the second hinge combination part such that it can be combined to the hinge tube combination groove, a curved surface groove and a lower combination part provided at upper and lower surfaces of the second hinge combination part, and a step jaw provided at a part of a whole surface of the second hinge combination part such that it can be combinated with the step jaw, and wherein the hinge unit comprises a hinge pin combined to a hinge pin insertion groove and having a spring combination groove, a torsion control pin having a head groove, a spring combination groove, and a pin combination groove, a spring combined to the spring combination grooves of the hinge pin and the torsion control pin, and a fixing pin combined to the pin hole.

[5] The fire closure shutter according to claim 1, wherein the first shield bracket comprises a fixing plate fixed to and installed at the slat of the fire closure shutter, an end bar provided at one side of the fixing plate, combination parts having arc shapes and provided at upper and lower ends of the end bar, combination grooves provided at one surfaces of the combination parts to have the same shape as the arc shape of the combination part such that rotation is free and engagement and combination is airtight with respect to combination parts of another first shield bracket, and a shield plate provided at one side of the end bar, and wherein the second shield bracket comprises a fixing plate fixed to and installed at the slat of the emergency exit, an end bar provided at one side of the fixing plate, combination parts having arc shapes and provided at upper and lower ends of the end bar, combination grooves provided at one surfaces of the combination parts to have the same shape as the arc shape of the combination part such that rotation is free and engagement and combination is airtight with respect to combination parts of another second shield bracket, and a shield plate provided at one side of the end bar such that it is overlapped with the shield plate of the first shield bracket.

[6] The fire closure shutter according to claim 5, wherein the shield plate of the first shield bracket comprises a reinforcement part having a bent shape, and step jaws provided at upper and lower ends thereof such that it can be engaged and combined with a shield plate of another first shield bracket, and wherein the second shield plate 445 of the second shield bracket comprises a reinforcement part having a banding shape, and step jaws provided at upper and lower ends thereof such that it can be engaged and combined with a shield plate of another second shield bracket.

[7] The fire closure shutter according to claim 5, wherein any one of the first and second shield brackets has a magnet.

[8] The fire closure shutter according to claim 1, wherein the end bracket comprises a fixing plate fixed to and installed at the slat of the fire closure shutter, an end bar provided at one side of the fixing plate, combination parts having arc shapes and provided at upper and lower ends of the end bar, and combination grooves provided at partial surfaces of the combination parts to have the same shape as the arc shape of the combination part such that rotation is free and engagement and combination is airtight with respect to combination parts of another end bracket. [9] The fire closure shutter according to claim 1, wherein the shield bracket further comprises an emergency automatic locking device to prevent the emergency exit from being opened when a fire occurs. [10] The fire closure shutter according to claim 9, wherein the emergency automatic locking device comprises: a case fixed to and installed at the slat of the emergency exit; a spring built in the case; a locking rod inserted into the case and having a spring jaw and a nurling such that it can protrude through a through-hole provided at the end bar of the second shield bracket; a cap installed at an entrance of the case; and a fuse installed between the nurling of the locking rod and the cap, and molten by heat when the fire occurs, thereby unlocking the locking rod. [11] The fire closure shutter according to claim 10, wherein the case has a locking protrusion at its inner part, and a bush is installed at and locked by the locking protrusion such that it can support the spring. [12] The fire closure shutter according to claim 10, wherein the fuse is of soft lead that is easily molten by flame. [13] The fire closure shutter according to claim 9, wherein the emergency automatic locking device comprises: a housing fixed to and installed at the fire closure shutter and having a guide groove and a cover fragment; a locking lever installed and transferred between the guide groove and the cover fragment; a control screw connecting to the locking lever such that it can control an amount of transfer of the locking lever; a spring combining to the control screw and elastically pressing the locking lever; and a fuse molten and eliminated by heat when the fire occurs, and combined to the control screw such that it increases the amount of transfer of the control screw and strengthens a locking state of the locking lever. [14] The fire closure shutter according to claim 13, wherein the housing has a stopper and a through-hole at the cover fragment to facilitate transfer and control of the locking lever, and wherein the locking lever has a guide hole, a screw hole, and a spring insertion hole to combine the stopper, the control screw, and the spring. [15] The fire closure shutter according to claim 13, wherein the locking lever has a square bar shape in appearance, and is sharply shaped to have a curved surface part at a front end where locking is implemented. [16] The fire closure shutter according to claim 1, wherein the emergency exit has a smoke stopping stopper for airtightly shielding the gap between the fire closure shutter and the emergency exit. [17] The fire closure shutter according to claim 16, wherein the smoke stopping stopper has a banding part of a type surrounding the slat of the fire closure shutter. [18] The fire closure shutter according to claim 17, wherein the banding part is polygonal shaped. [19] The fire closure shutter according to claim 17, wherein the banding part 810 is round shaped.