KR102261712B1 - Fire door with increased fire resistance - Google Patents

Abstract

In the fire door with reinforced fire resistance according to the present invention, the fire door is rotated by a hinge in a state formed by combining the first and second frames each bent in a shape similar to the letter 'a', the hinge-side end of the first frame is the fire door a first bent part bent inward of a, and a second bent part bent and extended toward the second frame from the end of the first bent part so as not to touch the second frame, the hinge-side end of the second frame, an introduction portion extending toward the boundary portion of the first and second bent portions so as not to touch the boundary portion of the first and second bent portions, a rounding bent portion rounded and bent inwardly from the end of the introduction portion to the inside of the fire door, and an end of the rounding bent portion It is characterized in that it has a termination portion extending a certain length toward the second frame.
According to the fire door with reinforced fire resistance according to the present invention, it is possible to efficiently prevent heat transfer between frames of the fire door easily and to ensure durability at the same time.

Description

FIRE DOOR WITH INCREASED FIRE RESISTANCE

The present invention is a fire door with enhanced fire resistance, and more specifically, by improving the bent portion formed at the ends of two frames to eliminate or minimize the contact area between the bent portions, in case of a fire, a fire can be easily spread from one frame to another. It is about a fire door that can block transmission problems.

A fire door provides a function to prevent a phenomenon in which heat is easily conducted to the opposite side through the door in case of a fire, and generally has a structure provided with an insulating material that delays or prevents heat transfer in a frame made of an iron plate.

For the convenience of manufacturing and assembling, these fire doors are often manufactured by combining two frames rather than as one integral unit. It not only provides insulation, but also serves to prevent the problem of easy heat transfer to adjacent frames.

1 is a cross-sectional view schematically showing the structure of a known fire door.

Referring to FIG. 1, a typical fire door is constructed by combining two frames bent in the shape of a 'L' to make a fire door shaped like a 'ㅁ' and filling the inside with a filler having thermal insulation performance to complete the fire door. make it This fire door may have a sliding door structure, but for convenience, it is more common to follow a method that is coupled to a hinge formed on one side of the boundary with the door frame to rotate and open in an opening/closing manner.

At this time, the ends of the two frames have a bent structure, and the hinge-side ends are coupled so that the bent parts overlap each other like a C, and the ends of each frame on the opposite side of the hinge in the diagonal direction of the bent parts are also Similar to the above-described end portion, the bent portion of the C-shape is formed to overlap each other, but in order to prevent a gap with the door frame from occurring when the fire door is opened and closed, it protrudes to one side and provides the same shape and function as a cover covering the door frame.

When two frames are combined by such a bent portion, when a fire occurs on one frame side, it provides a function to prevent heat or fire from being easily conducted to the other frame.

However, the gap between the above-described bent parts formed on the hinge side as well as on the opposite side of the hinge is narrow, and the bent parts are distorted in a fire and eventually come into contact with each other and tend to transfer heat easily. The gap between the parts is narrowed, and consequently, there may be a problem that each of the bent parts contacts each other.

According to Korean Patent Laid-Open No. 10-2019-0029111, a fire door structure and a method for manufacturing the same, the front panel is made of a plate material and has a plurality of bent grooves recessed to one side; a rear panel in the form of a plate, in which a plurality of bent grooves recessed to the other side are formed; a heat shield plate interposed between the front panel and the rear panel; middle part coupling means for coupling the middle part of the front panel and the rear panel with the heat shield plate interposed therebetween; edge coupling means configured to couple the edges of the front panel and the rear panel in a manner without bonding and without bolting; and a cover member covering each of the bent grooves.

Through this, it is disclosed that it is possible to prevent dew condensation by securing airtightness between the front panel and the rear panel, thereby providing an effect of further improving heat insulation and fire resistance.

However, according to this technology, the bent grooves of the front panel and the rear panel are formed to be fitted with each other. In this case, as described above, since the front panel and the rear panel are in close contact with each other without a gap, airtightness may be secured, but fire resistance is improved. Rather, there is a problem that interferes with fire resistance by easy heat transfer.

Therefore, the need to develop a new and advanced fire door capable of reinforcing fire resistance more excellently without having to form a complicated bending structure at the ends of the two frames is emerging.

The present invention has been devised to overcome the problems of the above technology, and the bent portions of the first and second frames are adjacent to each other, but prevent contact with each other, and at the same time provide a structure that can minimize the contact area even when contacted during impact. Its main purpose is to provide a fire door with enhanced insulation and fire resistance performance.

Another object of the present invention is to strengthen the fire resistance by mounting the first insulating material in the space generated by the bonding of the bent portions of the first and second frames.

Another object of the present invention is to further strengthen the fire resistance by additionally mounting a second heat insulator around the first heat insulator.

In order to achieve the above object, the fire door with reinforced fire resistance according to the present invention is a fire door that is rotated by a hinge in a state formed by combining the first and second frames each bent in a shape similar to the letter 'a', The hinge-side end includes a first bent part bent inwardly of the fire door, and a second bent part bent and extended toward the second frame from the end of the first bent part so as not to touch the second frame, the second The hinge-side end of the frame includes an introduction portion extending toward the boundary portion of the first and second bent portions so as not to touch the boundary portion of the first and second bent portions, and a rounding bent portion rounded to the inside of the fire door at the end of the introduction portion and a terminating portion extending a predetermined length from the end of the rounding bent portion toward the second frame.

In addition, in the space surrounded by the first and second bent portions, the second frame, and the end portion, it is characterized in that a first insulating material in the form of a block is provided.

In addition, the first heat insulator is spaced apart from the first bent part, and a second heat insulator is provided between the first bent part and the first heat insulator.

According to the fire door with enhanced fire resistance according to the present invention,

1) Efficiently prevent heat transfer between each frame of the fire door, and at the same time guarantee durability,

2) By filling the space between the frames with the first or the first and second insulation materials, it is possible to secure a more stable space and strengthen the insulation properties,

3) It provides the effect of additionally strengthening the fire resistance by the various shapes of the insulating material.

delete

1 is a cross-sectional view schematically showing the structure of a known fire door.
Figure 2 is a cross-sectional view schematically showing the structure of the fire door of the present invention.
Figure 3 is a partially enlarged perspective view of the structure of the fire door of the present invention.
Figure 4 is a partially enlarged cross-sectional view showing a state in which the first insulating material is mounted on the fire door of the present invention.
5 is a partially enlarged cross-sectional view showing a state in which the first and second heat insulating materials are mounted on the fire door of the present invention.
FIG. 6 is a partially enlarged cross-sectional view illustrating a modified embodiment of the second heat insulating material mounted on the fire door according to FIG. 5 .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale, and like reference numbers in each drawing refer to like elements.

Figure 2 is a cross-sectional view schematically showing the structure of the fire door of the present invention, Figure 3 is a partially enlarged perspective view of the structure of the fire door of the present invention.

First of all, the fire door of the present invention, like the known fire door shown in FIG. 1 , as a whole, is combined with a letter or similar two frames, namely, the first and second frames 10 and 20 to form a 'ㅁ' shape. In this case, a coupling site between the first and second frames 10 and 20 is formed on the hinge (upper right corner in FIGS. 1 and 2) side and the diagonally opposite side of the hinge. Among these two coupling sites, especially the hinge side coupling It is the core of specializing the structure of each end of the first and second frames 10 and 20 for the site.

Of course, the detailed structure of the present invention described below is not necessarily limited to being formed only at the hinge-side coupling site, and may be formed individually or simultaneously on the opposite side of the hinge, but the bent portion on the opposite side of the hinge is shown in FIGS. 1 and 2 It is more preferable to be formed in the bent portion of the hinge side because it protrudes outward as described above to provide a cover structure that prevents a gap with the door frame.

Specifically, as can be seen from FIGS. 2 and 3 , the fire door of the present invention is specialized for the hinge-side end structure of the first and second frames 10 and 20, and the hinges of the first and second frames 10 and 20 for this are specialized. Each of the side ends will be described as follows.

First, the hinge side end of the first frame 10, that is, the short side 12 side end, not the long side 11, in the L-shaped bent structure is directed toward the inside of the fire door (inside the space formed by the coupling portion of the first and second frames) It has a first bent part 13 bent to and a second bent part 14 that is bent again and extended in the direction of the second frame 20 from the end (end) of the first bent part 13, At this time, the second bent portion 14 is spaced apart from the second frame 20 by a predetermined distance.

Correspondingly, the end of the second frame 20, that is, the end of the short side 22, not the long side 21, like the first frame 10 in the L-shaped bent structure, has the introduction part 23 and the rounding bent part 24. and a termination portion (25).

The introduction part 23 is bent and extended from the end of the first frame 10 to form a part of the short side 22 of the second frame 20 in the direction of the boundary of the first and second bent parts 13 and 14. ,2 This is a portion formed to extend to a length that does not touch the boundary portion of the bent portions 13 and 14.

In addition, the rounding bent part 24 refers to a part rounded and bent from the end of the introduction part 23 to the inside of the fire door (inside the space formed by the coupling part of the first and second frames).

Finally, the end portion 25 is a portion extended by a certain length so as not to touch the long side 21 of the second frame 20 toward the second frame 20 of the rounding bent portion 24, and is generally a second bent portion. It may extend in parallel with the introduction portion 23 as a shorter length than the portion 14 , or may extend obliquely to have a predetermined angle toward or opposite the introduction portion 23 .

Based on this structure, the function of the fire door of the present invention will be described as follows.

First, the first and second bent portions 13 and 14 of the first frame 10 contribute to forming a certain space that can accommodate the rounding bent portion 24 and the ending portion 25 of the second frame 20 . do. Instead, the second bent portion 14 is extended to be spaced apart from the second frame 20 by a certain distance, thereby preventing unnecessary heat transfer by contact with the second frame 20 in case of fire, and even if the second Even in contact with the frame 20, the extent to which the ends touch, that is, the level of line contact rather than surface contact, can minimize the occurrence of the above-described heat transfer.

In addition, since the rounding bent portion 24 and the terminating portion 25 of the second frame 20 are also spaced apart from the first bent portion 13 and the second bent portion 14 by a certain distance, heat transfer due to mutual contact is prevented. This can be prevented from happening, and even if it is adjacent to the first bent part 13 or the second bent part 14 of the first frame 10 in the event of a fire or by daily use, the termination part 25 is the second In order to reach the level of contact with the bent portion 14 , there is a difficulty in that there must be an external pressure sufficient to open the rounding bent portion 24 . In addition, the rounding bent part 24 also has to unfold the terminating part 25 in order to reach the first bent part 13, but this is also not easy. As a result, it ends with the rounding bent part 24 of the second frame 20. It provides a characteristic that can effectively prevent the problem of heat transfer by mutual contact because the part 25 is not easy to contact the first frame 10 .

In summary, the fire door based on the above-described structure has a structure in which the bent portions of the first and second frames 10 and 20 are difficult to contact with each other, so that it is possible to effectively block the problem of unnecessary heat transfer. .

At this time, since a gap may occur between the short side 12 of the first frame 10 and the introduction portion 23 of the second frame 20, and thus durability may be reduced, as can be seen from FIG. 3 . The hinge side of the first and second frames 10 and 20 by riveting at regular intervals along the extension direction of the short side 12 of the first frame 10 and the introduction part 23 of the second frame 20 It is possible to ensure durability for the bonding structure.

4 is a partially enlarged cross-sectional view showing a state in which the first insulating material is mounted on the fire door of the present invention.

4, in the space (hereinafter, defined as 'space') surrounded by the first and second bent portions 13 and 14 and the long side 21 and the end portion 25 of the second frame 20, It can be seen that the first insulating material 30 in the form of a block is provided.

The first heat insulating material 30 is made of a material having heat insulation and elasticity performance (this may be a known material having elasticity such as rubber) and is elastically stretched and contracted to absorb the shock transmitted in case of fire while preventing heat transfer. In addition to providing a function similar to that of a general packing structure, the second bent portion 14 of the first frame 10 and the end portion 25 of the second frame 20 have a fixing or supporting role to prevent bending. do.

In other words, when the space between the second bent part 14 and the terminating part 25 is empty, the second bent part 14 and the terminating part 25 can be easily bent by an external force, thereby only impairing durability. However, the fire resistance may also be lowered, and the first insulating material 30 fills this space, so that the second bent portion 14 and the end portion 25 provide structural stability to prevent the problem of bending or flowing. do.

The first insulator 30 is made of a volume that fills the space surrounded by the first and second bent portions 13 and 14 and the long side 21 and the end portion 25 of the second frame 20 so as to be airtight or otherwise. It may be made in a volume slightly smaller than this, and it is preferable that the material is elastic enough not to be easily crushed.

Additionally, in a state in which the first insulator 30 is mounted, the end of the end portion 25 extends toward the introduction portion 23 and then the end is further extended in a rolled shape toward the rounding bent portion 24 . It is possible to have the part 26 .

The rolling part 26 prevents the problem of applying unnecessary pressure to the first heat insulating material 30 due to the end of the end part 25 being pushed or bent toward the first heat insulating material 30, and at the same time, the shape of the rounding bent part 24 As a result, the bent portion formed at the end of the second frame 20 serves to provide homeostasis to maintain the original shape by providing a basis for retaining the stress while maintaining the .

5 is a partially enlarged cross-sectional view showing a state in which the first and second heat insulators are mounted on the fire door of the present invention.

As can be seen from FIG. 5 , the space described above may be filled with the second heat insulating material 40 as well as the first heat insulating material 30 .

At this time, the first heat insulator 30 is not in close contact with the first bent part 13 but is spaced apart by a predetermined interval to form a gap between the first heat insulator 30 and the first bent part 13, and the second heat insulator in this gap (40) is mounted.

The second heat insulator 40 may be made of the same heat insulating material as the first heat insulator 30 , as well as be made of a material different from that of the first heat insulator 30 .

The second heat insulator 40 has a length extending to the start portion of the first bent portion 13 (ie, the boundary portion between the first bent portion and the short side of the first frame 10), and thus the first bent portion 13 ) has a structure that can sufficiently cover the inner surface of the body, which prevents heat transfer through the space from the second frame 20 to the first bent part 13, and also blocks heat transfer in the opposite direction. function can be performed.

In addition, the second insulator 40 has a function to prevent problems such as the first insulator 30 being inclined or flowing toward the bent portion of the second frame 20, that is, the fixing function of the first insulator 30. At the same time, it serves to reliably block unnecessary movement of the first heat insulating material 30 .

6 is a partially enlarged cross-sectional view illustrating a modified embodiment of the second heat insulating material mounted on the fire door according to FIG. 5 .

6 shows three modified examples of the second insulator 40. First, in the embodiment according to FIG. 6(a), the second insulator 40 includes the first and second bent portions 13 and 14. ) relates to a tapered structure so that the thickness increases as it extends outward from the boundary portion.

According to this structure, it not only prevents the problem of the first insulator 30 from flowing in the direction of the rounding bent part 24 more reliably, but also provides a function of preventing the problem of the first insulator 30 being pushed toward the entrance of the space. do.

The embodiment according to FIG. 6(b) presents a structure in which the second heat insulating material protrudes outward beyond the starting point of the first bent part in addition to the tapered structure of FIG. 6(a).

According to this, since the outer portion of the second insulator 40, which is tapered and increased in thickness, partially protrudes to the outside, it can serve to easily dissipate the heat absorbed by the second insulator 40 to the outside in case of a fire.

The embodiment according to FIG. 6 ( c ) is specialized for the outer protruding structure of FIG. 6 ( b ), and specifically, on the surface facing the first frame 10 among both surfaces of the outer protruding portion of the second heat insulator 40 . The first and second protruding parts 41 and 42 are provided.

The first protruding part 41 refers to a portion that is convexly rounded and extended from the starting point, and the second protruding part 42 is shorter than the first protruding part 41 in length from the second protruding part 42 . It refers to a portion in contact with the other side of the outer protruding portion of the second heat insulating material 40 by being rounded to the outside.

According to the first and second protruding parts 41 and 42 , the outer protruding portion of the second heat insulator 40 has a structure such that an area spaced apart from the first frame 10 by a predetermined distance is oriented.

According to this, the second heat insulator 40 affected by the heat applied to the first frame 10 in contact with the first frame 10 is directed to the first frame 10 rather than the second frame 20 . 2 It is possible to minimize the influence or reception of heat transfer to the frame 20 .

In addition, the protruding end is directed to an area spaced apart from the first frame 10 by a certain distance rather than directly oriented to the first frame 10 itself, leaving the space around the first frame 10 as a kind of heat-insulating space. It is possible to combine the role of actively utilizing the space as a space for insulation treatment.
As described so far, the configuration and action of the fire door with reinforced fire resistance according to the present invention have been expressed in the above description and drawings, but this is merely an example and the spirit of the present invention is not limited to the above description and drawings, and the present invention Of course, various changes and modifications are possible without departing from the technical spirit of the company.

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

10: first frame 11: long side
12: short side 13: first bent part
14: second bent part 20: second frame
21: long side 22: short side
23: introduction part 24: rounding bent part
25: terminating part 26: rolling part
30: first insulation material 40: second insulation material
41: first protruding part 42: second protruding part

Claims (11)

In a fire door that is rotated by a hinge in a state formed by combining the first and second frames each bent in a shape similar to the letter 'a',
The hinge-side end of the first frame,
a first bent part bent to the inside of the fire door, and a second bent part bent and extended toward the second frame from the end of the first bent part so as not to touch the second frame;
The hinge side end of the second frame,
an introduction portion extending toward the boundary portion of the first and second bent portions so as not to touch the boundary portion of the first and second bent portions, a rounding bent portion rounded and bent inwardly from the end of the introduction portion to the inside of the fire door, and an end of the rounding bent portion and a termination portion extending a certain length toward the second frame in
In a space surrounded by the first and second bent portions, the second frame, and the end portion, a first insulating material in the form of a block is provided in a state spaced apart from the first bent portion,
Between the first bent part and the first heat insulator, a second heat insulator extending to the start of the first bent part is provided,
The second heat insulating material,
A fire door with enhanced fire resistance, characterized in that the tapered treatment increases the thickness as it extends outward from the boundary of the first and second bent portions. The method of claim 1,
The end of the termination part,
A fire door with enhanced fire resistance, characterized in that it has a rolling part that is further extended by rolling processing toward the rounding bent part from the introduction part. The method of claim 1,
In the second insulating material, the tapered outer portion is,
Fire door with enhanced fire resistance, characterized in that it protrudes outward beyond the starting point of the first bent part. 4. The method of claim 3,
One side facing the first frame of the outer protruding portion of the second heat insulating material,
A first protruding part that is convexly rounded and extended from the starting point;
Fire resistance, characterized in that it is shorter than the first protruding part and consists of a second protruding part which is concavely rounded to the outside in the second protruding part and contacts the other side of the outer protruding part in the second heat insulating material. Reinforced fire doors. delete delete delete delete delete delete delete

Images