KR101870772B1 - Fire door structure having a improved fireproof and durability and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a fire door structure and a manufacturing method thereof. More specifically, the present invention relates to a fire door structure having improved fire resistance and durability and a manufacturing method thereof, in which an insulating member or a thermal barrier panel is interposed between a front panel and a rear panel which form a fire door to be firmly integrated to ensure improved fire resistance and durability. The airtightness is ensured between the front panel and the rear panel to prevent dew condensation, and a finishing work is performed using a finishing material, which is able to be used for a decorating purpose, thereby expressing beauty beyond the hardness of the fire door. According to an embodiment, the fire door structure includes: a front panel having at least one ″U″ shaped bending groove; a rear panel having at least one ″U″ shaped groove, allowing each bending groove to face the outside, and facing the front panel; a thermal barrier panel interposed between the front panel and the rear panel; a front-rear panel coupling unit coupling the front panel with the rear panel while interposing the thermal barrier panel between the front panel and the rear panel; an edge coupling unit configured to couple opposite edges of the front panel and the rear panel to each other through a non-bonding scheme and a non-bolting scheme; a thermal barrier plate supporting unit having one side coupled to the edge coupling unit and the opposite side coupled to the thermal barrier panel; and a finishing member covering each bending groove.

Description

FIRE DOOR STRUCTURE HAVING A IMPROVED FIREPROOF AND DURABILITY AND MANUFACTURING METHOD THEREOF FIELD OF THE INVENTION [0001]

The present invention relates to a fire door structure and a method of manufacturing the fire door, and more particularly, to a fire door structure and a method of manufacturing the same, The present invention relates to a fireproof door structure having improved fire resistance and durability that can prevent condensation by securing airtightness between a front panel and a rear panel and can be finished with a decorative finish material so as to produce a beautiful appearance deviating from the shape of a rigid fire door, will be.

Generally, fire doors are used as door openings for doorways or emergency passages such as general houses, buildings, apartments, factories, offices, and prefabricated buildings, and they are used to prevent external fire from spreading into the room, And it is required to have a physical property requirement that doors and emergency doors should not be burned or deformed by strong internal heat in case of fire.

Especially, modern buildings, apartment buildings and apartment type factories are constructed as high-rise buildings, and the risk of fire occurrence is increasing a lot. If the fire and smoke are not prevented from spreading in case of fire, people living in high- , The role of installed fire doors is very important.

Such a fire door is usually constituted by providing a non-flammable or flame-retardant insulating material between the inner panel and the outer panel.

Specifically, a general fire door is mainly composed of a front iron plate (front panel), a steel fire door composed of a rear plate (rear panel) and a heating plate or a heating plate of a honeycomb structure as an inner filling material Flame retardant synthetic resin sheet or flame retardant wood board and honeycomb which is an internal filler are mainly made of flameproof which forms inside the door made of frame member.

However, in the conventional fire door, when the front panel and the rear panel are coupled together, the heat shield panel or the heat shield plate provided between the front panel and the rear panel may be lifted between the panels, thereby deteriorating the fire resistance. So that condensation occurs between the two panels, which results in poor durability and heat insulation.

In addition, since the coupling components between the two panels are complicated and manufacturing cost is increased, the construction efficiency is lowered due to difficulty in the construction work, and when the front panel and the rear panel are coupled, the coupling member such as bolt or nut is exposed to the outside, And the conventional fire door has a problem in that it imposes a limit on the appearance of a beautiful appearance.

(Document 1) Korean Patent Registration No. 10-1372566 (published on March 13, 2014) (Document 2) Korean Patent Publication No. 10-2016-0109746 (published on September 21, 2016) (Document 3) Registered Utility Model No. 20-0433376 of Korea Register (November 11, 2006) (Document 4) Utility Model No. 20-0242280 registered in the Republic of Korea (issued October 11, 2001)

It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide a fire-proof door which is constructed by integrally solidifying a heat insulating material or a heat shield panel interposed between a front panel and a rear panel constituting a fire door to secure durability and fire resistance, And to provide a fire door structure capable of preventing condensation by securing airtightness between the panel and the rear panel, and a method of manufacturing the same.

Another object of the present invention is to provide a fireproof door which can easily and reliably combine a front panel and a rear panel of a fire door to improve workability and can be finished with decorative finishing material on the panel surface exposed to the outside, So that the appearance of the door can be enhanced.

In order to achieve the above object, the present invention provides a front panel comprising at least one "U" A rear panel facing the front panel with one or more "U" -shaped bent grooves formed thereon and each bent groove facing outward; A heat shield panel interposed between the front panel and the rear panel; Front and rear panel coupling means for coupling the front panel and the rear panel in a state in which the heat shield panel is interposed; Edge coupling means configured to couple both edges of the front panel and the rear panel in a non-bonding and non-bolting manner; A heat shield plate supporting means having one side coupled to the edge coupling means and the other side coupled to the heat shield panel; And a closing member covering each of the bent grooves, wherein each of the front panel and the rear panel is formed by bending a plate material, and the front and rear panel joining means are provided on the bottom surface of each of the bent grooves, And a screw member or a rivet member for coupling the front panel and the rear panel through the engagement holes, or a screw member or a rivet member for coupling the front panel and the rear panel through the engagement holes, or formed in a heat shield panel at a position corresponding to each of the bending grooves And a welding portion formed by welding a bottom surface of each of the bent grooves through a fitting hole, wherein the edge fitting means includes a welding portion extending from both ends of the front panel toward the rear panel so as to be bent in multiple stages, An engaging bend formed at the multi-stepped bent end portion and having a " C " Wherein the rear panel has a plate-shaped reinforcing extension portion extending from an extending end of the bent portion toward the rear panel, and a plurality of bent portions extending from both ends of the rear panel toward the front panel, Wherein the heat shield plate supporting means is formed by bending a plate member, and one side is formed by bending the reinforcing elongate member at both edges of the front panel, U "shape when viewed in the longitudinal direction so as to be inserted into the seat, and a joint fixing part which is bent and extended from one end of the seat engagement part to be coupled to the heat shield panel.
The coupling bending portion and the fitting bending portion may be formed by riveting or screw coupling through a coupling hole formed in a threaded portion formed at an interval along the longitudinal direction, And a hermetic member formed on at least one of the inside of the fitting bend portion and the fitting bend portion and the fitting bend portion. And the closing member is formed of a shape corresponding to the sectional shape of the bent groove and is fitted to the bent groove.
The present invention also provides a method of manufacturing a fire door structure, comprising the steps of: providing a front panel and a rear panel, the front panel and the rear panel being formed by bending a plurality of portions of the intermediate portion of the plate material; A panel fixing step of fixing the front panel and the rear panel in a state in which the openings of the bent grooves face outward and a heat shield panel is interposed between the front panel and the rear panel; And a finishing step of finishing each of the bent grooves by covering the bent grooves, wherein the panel fixing step includes a step of fixing the front door panel to one of the front panel and the rear panel, And the front panel provided at the panel preparing step is bent in a multi-step manner from both ends to the rear panel side, and the front panel provided at the multi- And a reinforcing extension portion extending from an extending end of the "C" -shaped joint bent portion to the rear panel side is formed, and the rear panel is provided with the front panel Of the " C "-shaped joint bending portion Wherein the heat shield panel is provided with a heat shield panel having a coupling hole at a position corresponding to the bending groove and the reinforcing extension portion is formed in a plate shape extending from the extending end of the coupling bending portion to the rear panel side And the panel fixing step includes a heat exchanging plate support means formed by bending the plate material and having a seating U-shaped seating engagement portion as viewed in the longitudinal direction and an engagement and retention portion extending and bent from one end of the seating seating engagement portion, And fixing the heat shield panel by fixing the joining fixing part to the heat shield panel, wherein the panel fixing step includes fixing the heat shield panel to the front panel and the rear panel, And the bending grooves of the heat shield panels at positions corresponding to the bending grooves of the rivets And fixing the two panels in a manner of one of a coupling method and a welding method, and fitting the coupling bending part and the fitting bending part into each other, wherein the panel fixing step is performed inside the fitting bending part and the coupling bending part And an airtight member interposed in at least one of a space between the fitting portion and the fitting bend.

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As can be clearly understood from the above description, the fire door door structure and the method of manufacturing the same having improved fire resistance and durability of the present invention can be realized by integrally constituting the heat insulating material provided between the front panel and the rear panel to ensure durability and fire resistance, It has the effect of increasing competitiveness.

Further, airtightness can be ensured between the front panel and the rear panel constituting the fire door to prevent condensation, thereby further improving the heat insulation and fire resistance.

In addition, the front panel and the rear panel can be firmly connected to each other, and the outer appearance can be produced with a certain pattern or color using decorative finish material, or can be produced by illumination, so that it can be removed from the hard outer appearance to have a beautiful appearance It is effective.

1 is a plan sectional view showing a state in which a fire door door structure according to the present invention is mounted on a door frame.
Fig. 2 is a partial sectional view showing a part of a fire door structure according to the present invention, showing a state before coupling between a front panel and a rear panel. Fig.
3 is a flowchart showing a process of manufacturing a fire door structure according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

2 is a partial cross-sectional view showing a part of a fire door structure according to the present invention, and shows a state before coupling between a front panel and a rear panel, and FIG. And FIG. 3 is a flowchart showing a process of manufacturing a fire door structure according to the present invention.

As shown in FIGS. 1 and 2, the fire door door structure according to the present invention includes: a front panel 100 formed by bending a plate material, in which at least one bent groove 110 bent inward is formed; A rear panel 200 formed by bending a plate material and having one or more bent grooves 210 bent inwardly and facing the front panel 100; A heat shield panel or a heat shield plate 300 interposed between the front panel 100 and the rear panel 200; Front and rear panel coupling means for coupling the front panel 100 and the rear panel 200 with the heat shield panel or the heat shield plate 300 interposed therebetween; An edge coupling means configured to couple the edges of the front panel 100 and the rear panel 200 without bonding and without bolting; A heat shield plate supporting means fixed to the edge coupling means at one side and fixed to the heat shield panel 300 at the other side; And a closure member 700 covering the bending grooves 110 and 210.

The folding grooves 110 of the front panel 100 are formed by bending a plurality of steps at one or more portions of the plate material itself to form openings.

The bent grooves 110 of the front panel 100 may be formed in various shapes when viewed from a plane. For example, it may be formed in a U shape as shown in the drawing, and may be formed in a truncated cone shape or a one-side open circular shape.

The bent grooves 210 of the rear panel 200 are also formed by grooving at one or more positions of the plate material itself so as to be open at one side. In other words, the direction of the bent groove 210 of the rear panel 200 is opposite to the opening direction of the bent groove 110 of the front panel 100, and the front panel 100 and the rear panel 200 The bottom portion faces toward each other.

The bent grooves 210 of the rear panel 200 may also be formed in various shapes when viewed in plan. For example, it may be formed in a U shape as shown in the drawing, and may be formed in a truncated cone shape or a one-side open circular shape.

The folding grooves 110 and 210 of the front panel 100 and the rear panel 200 may be formed perpendicular to the panels 100 and 200 and may be inclined to one side or the other side, The grooves 110 and 210 may be formed vertically, inclined to one side, inclined to the other side, or the like.

A coupling hole may be formed in a bottom surface of each of the bending grooves 110 and 120 of the front panel 100 and the rear panel 200 or a coupling hole formed in the heat- Are formed with protrusions which can come into contact with each other through the holes. The through-hole or protrusion constitutes one component of the front and rear panel coupling means described in detail below.

Subsequently, the front panel 100 and the rear panel 200 are preferably formed of an aluminum alloy or stainless steel metal material having excellent heat resistance and corrosion resistance, and may be made of a nonflammable synthetic resin material according to the installation conditions.

Next, it is preferable that the heat shield panel or the heat shield plate 300 is made of a heat insulating flame retardant material. For example, the heat shield panel or the heat shield plate 300 may be formed of a gypsum, a flame-retarded pulp mold, or a flame-retardant synthetic resin material.

As shown in the drawings, the front and rear panel joining means includes coupling holes formed in the bottom surface of each of the bending grooves 110 and 210 and the heat shield plate 300, respectively, And a screw member 410 which is engaged with (threadedly engaged with) the threaded portion of the engagement hole.

The front and rear panel joining means may be composed of a rivet for riveting joining between the engaging holes having the threaded portions and the engaging holes having no threaded portions instead of the corresponding screw members 410.

The front and rear coupling means may be formed in a manner that the bending grooves 110 of the front panel 100 and the bending grooves 110 of the rear panel 200 in the state of interposing the heat shield panel or the heat shield plate 300, It is not particularly limited as long as it is means for coupling the front panel 100 with the heat shield panel or the heat shield plate 300 and the rear panel 200 through the through hole 210.

For example, the front panel 100 and the rear panel 200 are made of metal, and the front and rear panels 100 and 200 have bent grooves 110 and 120, respectively, The bottom surface of the heat shield plate 300 is formed with protrusions protruding from the bottom surface and capable of contacting with each other through engagement holes formed in the heat shield panel or the heat shield plate 300. The protrusions can be integrally joined by welding such as spot welding .

As described above, according to the present invention, the coupling structure between the front panel and the rear panel constituting the fire door structure is simplified, thereby improving the assembling property and improving the working efficiency.

The edge coupling means configured to couple the edges of the front panel 100 and the rear panel 200 in a non-bonding and a non-bolting manner includes: Shaped joint bent portion 510 extending in a bent and extended state and opened to the outside at an extended end thereof, a linear extending portion 510 extending from the extended end of the "C" shaped joint bent portion 510 toward the rear panel 200 side, And a reinforcing extension portion 520 extending from both ends of the rear panel 200 toward the front panel 100 and extending at an end of the reinforcing extension portion 520, Quot; C "-shaped fitting bend portion 530 that is fitted to the fitting portion 530. As shown in Fig.

The joint bending part 510 may be formed as a part of an open circular round shape which is integrally bent at a multi-step bent and extended end, or may be formed to have a wide lower side and a narrow upper light side cross-section " .

The front panel 100 and the rear panel 200, which form the fire door, can be coupled with each other by a rivet joint, a screw connection, or the like between the coupling bend section 510 and the fitting bend section 530, And are firmly coupled at both ends thereof. In the case of the screw coupling method, the screw member is coupled to the coupling bending portion 510 and the fitting bend portion 530 through a coupling hole formed in a threaded portion formed at an interval in the longitudinal direction.

The reinforcing extension part 520 is formed in a plate shape extending from the extending end of the coupling bending part 510 toward the rear panel 200 side.

The fitting bend portion 530 is integrally formed at the extending end portion of the rear panel 200 in a shape corresponding to the coupling bending portion 510 and is tightly fitted or press- Respectively.

Here, the present invention may further include a rubber gasket as a hermetic member formed in a shape corresponding to the cross-sectional shape of the fitting bend section 530 and inserted and fixed in the fitting bend section 530. The present invention may further include a hermetic member interposed between the coupling bending portion 510 and the fitting bend portion 530 separately or together with the hermetic member inserted and fixed in the fitting bend portion 530 .

The hermetic member may be made of a rubber material or a silicon material, but is not limited thereto.

This airtightness member not only secures airtightness between the joint bending portion 510 and the bending portion 530 but also provides a firm fixing force between the bending portion 510 and the bending portion 530.

The heat shield plate supporting means is formed by bending the plate member, and one side of the heat shield plate supporting means is provided with a seating engagement portion 610 (hereinafter, referred to as " U " And a joint fixing part 620 which is bent and extended from one end of the seat coupling part 610 to be coupled (for example, inserted and fixed) to the heat shield panel 300.

When the heat shield plate 300 is made of a pulp mold or a foam having a predetermined thickness, the heat shield plate support means may be configured such that the joint fixing portion 620 is inserted over the entire length of the heat shield plate, And a bending extension insertion piece which is partially inserted at an interval along the entire length, and can be coupled to the heat plate.

When the heat shield plate 300 is made of the same material as the non-combustible synthetic resin material, the heat shield plate supporting means can be fixedly coupled to the heat shield plate 300 in various fixing schemes.

The finishing member 700 covering each of the bending grooves 110 and 210 is formed in a shape corresponding to each of the bending grooves 110 and 210 and is connected to the bending grooves 110 and 210 by a finishing .

The closing member as the closing member may be made of various materials such as rubber, synthetic resin, silicone, and iron, and may be formed to cover the openings of the respective bending grooves 110 and 210.

Here, the present invention may further include a light emitting unit provided in the closure member.

Specifically, the light emitting means includes a plurality of LED chip members embedded in the closure member, the top surface of the LED chip member being embedded and fixed so as to be exposed to the outside, a wiring line electrically wired to each of the LED chip members, And a common connection terminal (not shown) drawn out to one side of the front panel 100 and / or the rear panel 200.

The connection terminal (not shown) is connected to receive power from an external power supply provided on the side where the fire doors are installed. The on / off switch for turning on / off the light emitting means may be formed on one side of the front panel 100 or on one side of the rear panel 200, A light detection sensor may be formed on one side of the surface, and the LED chip member may be automatically turned on / off by a signal of the light detection sensor.

Next, a method for manufacturing a fire door structure according to the present invention will be described with reference to FIG. 3 is a flowchart showing a process of manufacturing a fire door structure according to the present invention.

A method for manufacturing a fire door structure according to the present invention is a method for manufacturing a fire door door structure, comprising a pair of panels (i.e., a front panel and a rear panel) in which at least one bending groove is formed by bending a plurality of portions in a middle portion of a plate (S100); A panel fixing step of fixing the pair of panels with the openings of the bent grooves facing outward and interposing a heat shield panel or a heat shield plate (hereinafter referred to as "heat shield panel") between the pair of panels, (S200); And a finishing step (S300) of covering the bent grooves by covering the bent grooves. In the panel fixing step (S200), one side is fixedly coupled to the heat shield panel at both edges of the fire door door structure, And the two panels are fixed in a state in which the heat shield panel is interposed by heat shield plate support means coupled and fixed to one of the panels.

In the panel preparing step (S100), the bent grooves of the respective panels are formed by the multi-step bending of a part of the plate material itself and the grooves being opened at one side.

The bent grooves of the respective panels may be formed in various shapes when viewed in plan. For example, a "U" shape, a frustum shape, or an open circular shape.

Further, each of the bent grooves may be formed perpendicularly to each panel, and may be inclined to one side or the other side.

In addition, one panel (that is, a front panel) provided in the panel preparing step S100 is bent at a plurality of stages from one end to the other (i.e., the rear panel) And a reinforcing extension portion extending linearly from the extending end of the "C" -shaped joint bent portion to the rear panel side is formed, and the rear panel, which is the other panel, is provided on the side of the front panel And is provided with a bent portion of a cross section of a "C" shape which is fitted to the inside of the " C "-shaped engaging bending portion at its extended end.

The joint bending portion may be formed as a partially open circular round shape integrally bent at a multi-end bent and extended end portion, or may be formed to have a wide cross-section and a narrow cross-sectional cross-section "C"

The heat shield panel is provided with a heat shield panel having a fitting hole at a position corresponding to the bent groove.

The reinforcing extension portion is formed in a plate shape extending from the extending end of the coupling bending portion toward the rear panel side, and is formed over the entire length of the panel.

The fitting bend portion is integrally formed at the extending end of the rear panel in a form corresponding to the coupling bending portion and is formed to fit or press fit into the coupling bending portion.

A method of manufacturing a fire door door structure according to the present invention is formed in a shape corresponding to the cross-sectional shape of the fitting bend portion, and a rubber gasket as an airtight member is inserted and fixed to the inside of the fitting bend portion, And interposing a rubber gasket as an airtight member between the portions.

 The hermetic member may be made of a rubber material or a silicon material, but is not limited thereto.

Such a hermetic member not only secures airtightness between the engaging bending portion and the engaging bending portion, but also provides a firm fixing force between the engaging bending portion and the engaging bending portion.

Next, in the panel fixing step (S200), the plate is folded to make use of a heat exchange plate supporting means formed with a cross-section "U " type seating fitting portion and a coupling fixing portion formed by extending from one end of the seating fitting portion (S210) of fixing the heat shield panel by inserting and joining the extension reinforcement part of the front panel to the seating connection part and coupling the coupling fixing part to the heat shield panel.

In order to engage the coupling fixture of the heat-shield plate support means with the heat-shielding panel, the coupling fixture may be coupled over the entire length of the heat-shielding panel or may be partially coupled with intervals along the longitudinal direction of the heat-

In the panel fixing step S200, the two panels are fixed by a rivet jointing method, a screw joining method, or a welding method through the respective bending grooves of the two panels and the joining holes of the heat shield panels corresponding thereto, And engaging the bending portion and the fitting bending portion.

In addition, it is possible to firmly connect both ends of the front panel and the rear panel, which constitute the fire door structure, by being coupled with each other by the rivet joint method or the bite-nub joint method between the joint bent part and the fitting part.

Next, in the finishing step (S300), a finishing member formed in a shape corresponding to each bending groove may be fitted into the bending groove.

Here, the closure member may include a light emitting unit such as an LED chip.

According to the fire door door structure and the method of manufacturing the fire door door according to the present invention as described above, the heat insulation material provided between the front panel and the rear panel constituting the fire door can be integrally formed to secure durability and fire resistance, Airtightness can be ensured between the panels to prevent condensation, and the heat insulating property and fire resistance can be improved.

In addition, the present invention can firmly connect the front panel and the rear panel, and can be used as an ornamental finish material to produce an appearance having a certain pattern or color, or to produce an illumination, so that it can be removed from a hard outer appearance to have a beautiful appearance The above description is merely illustrative of the technical idea of the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made without departing from the essential characteristics of the present invention. Modifications and substitutions will be possible. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of the claims should be construed as being included in the scope of the present invention.

100: front panel, 110, 210: bending groove
200: rear panel, 300: heat shield panel or heat shield plate
410: screw member, 510: engaging bend
520: reinforcing extension part, 530: fitting bend part
610: seat coupling portion, 620:
700: closing member, S100: panel preparing step
S200: Panel fixing step, S300: Finishing step

Claims (5)

A front panel on which at least one "U"
A rear panel facing the front panel with one or more "U" -shaped bent grooves formed thereon and each bent groove facing outward;
A heat shield panel interposed between the front panel and the rear panel;
Front and rear panel coupling means for coupling the front panel and the rear panel in a state in which the heat shield panel is interposed;
Edge coupling means configured to couple both edges of the front panel and the rear panel in a non-bonding and non-bolting manner;
A heat shield plate supporting means having one side coupled to the edge coupling means and the other side coupled to the heat shield panel; And
And a closing member covering each of the bent grooves,
Each of the front panel and the rear panel is formed by bending a plate material,
The front and rear panel joining means includes a coupling hole formed in a heat shield panel at a position corresponding to a bottom surface of each of the bending grooves and the bending groove and a screw member coupling the front panel and the rear panel through the coupling holes, And a welding portion formed by welding a bottom surface of each of the bent grooves through a coupling hole formed in a heat shield panel at a position corresponding to each of the bent grooves,
Wherein the edge coupling means includes an engagement bending portion extending from both ends of the front panel toward the rear panel in a multi-step bending manner and having a "C" -shaped cross section when viewed in the longitudinal direction and formed at the multi- Like reinforcing extension portion extending from the extending end of the " C "-shaped joint bent portion toward the rear panel side, and a cross-section extending in a multi-step bend toward the front panel from both ends of the rear panel and having a" And a cross-section "C" -shaped fitting bend formed at the multi-step bent end portion and fitted into the inside of the fitting bend portion,
The heat shield plate supporting means is formed by bending a plate member, one side of which is formed as a U-shaped cross-section when viewed from the longitudinal direction so as to insert the reinforcing extension portion at both edges of the front panel, And a connection fixing part which is bent and extended from the coupling part to be coupled to the heat shield panel.
delete The method of claim 1, further comprising:
Wherein the coupling bending portion and the fitting bending portion are formed by riveting or screw coupling through a coupling hole formed in a threaded portion formed at an interval along the longitudinal direction,
Wherein the bent portion and the fitting bent portion are formed in a wide " C "-shaped shape having a narrow upper light-
And a hermetic member interposed in at least one of the inside of the fitting bend portion and the fitting bend portion and the fitting bend portion.
Wherein the closing member is formed in a shape corresponding to a sectional shape of the bent groove and is fitted to the bent groove.
delete A method for manufacturing a fire door structure,
A panel preparing step of preparing a front panel and a rear panel by bending a plurality of portions at a middle portion of a plate member to form at least one bending groove;
A panel fixing step of fixing the front panel and the rear panel in a state in which the openings of the bent grooves face outward and a heat shield panel is interposed between the front panel and the rear panel; And
And a finishing step of finishing each of the bending grooves by covering the bending grooves,
The panel fixing step may include fixing the panel with the heat shield panel interposed by the heat shield plate supporting means, one side of which is coupled to the heat shield panel at both edges of the fire door door structure and the other side is coupled to one of the front panel and the rear panel. Fixing the panel,
The front panel provided at the panel preparing step is bent in a multi-step manner from both ends to the rear panel side, and a connecting bent portion having a " C " And a rear panel extending from the front end of the front panel toward the front panel, the rear panel being bent toward the front panel and being fitted to the inside of the " C " A bending portion is formed,
Wherein the heat shield panel is provided with a heat shield panel having a fitting hole at a position corresponding to the bent groove,
The reinforcing extension portion is formed in a plate shape extending from the extending end of the engaging bending portion toward the rear panel side,
The panel fixing step may be performed by using a heat shield plate supporting means formed by bending a plate material and having a seating U-shaped seating portion of a cross-sectional shape as viewed in the longitudinal direction and an engaging and fixing portion formed by extending from one end of the seating seating portion And fixing the heat shield panel by inserting the extended reinforcing portion of the front panel into the seating engagement portion and coupling the coupling fixing portion to the heat shield panel,
The panel fixing step fixes the two panels in one of a rivet jointing method, a screw jointing method, and a welding jointing method through the bending grooves of the front panel and the rear panel and the corresponding holes of the heat shield panel at the corresponding positions And engaging the engaging bending portion with the engaging bending portion,
Wherein the panel fixing step further comprises a hermetic member interposed in at least one of the inside of the fitting bend portion and the fitting bend portion and the fitting bend portion.

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