KR101693777B1 - Door preventing warping and bending - Google Patents

Abstract

The present invention relates to a door to prevent warping and bending. More specifically, a bending prevention core, a bending prevention sub core, and a decoration core are installed between plates formed in a front and a rear surface, warping and bending are not generated in the door even if the door is repeatedly used for a long time, so expenses according to re-installation and replacement due to bending can be reduced and thereby practicality is provided. Warping and bending can be prevented even if a wooden door, not an existing metallic door, is used to prevent warping and bending, the door is conveniently used in daily life due to the lightweight of the door, and unique texture, and beautiful and various patterns can be expressed due to the wooden door, so a value of the door is increased. Since a hollow part is formed inside the bending prevention core, the door has high strength by protruding parts and protrusions while being lightweight in comparison with a usual core having the fully filled inside, so practicality and efficiency are increased.

Description

[0001] The present invention relates to a door for preventing warping and bending,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a door for preventing warpage and warpage, and more particularly, to a door for preventing warpage and warpage, So that it is possible to reduce the cost due to the reinstallation and replacement of the door due to the bending of the door, thereby providing a practical door for warping and warping.

The structure of a door which is widely used in the past is merely a hollow type for joining plate members. It is installed on the door frame and repeatedly used for a long time, causing the door to be twisted, Which is a problem. At this time, although the door is formed as a single-piece door by a single piece of wood, even if the weight is heavy, warping and warping are caused by repeated use for a long time.

In addition, the door manufactured in this way is warped during use, and interference with the counterpart occurs during opening and closing to increase the inconvenience. As a complement to this, a separate frame made of aluminum or the like is formed outside the door to prevent the warp, but this is a cause of cost increase. Also, due to the wooden texture of the panel and the metallic property of aluminum, the harmony of the product is deteriorated. Loses.

Korean Registered Utility Model No. 20-0154528

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems,

Since the warp prevention core, the warp prevention auxiliary core and the deco core are provided vertically between the plates formed on the front and rear sides, even if the door is repeatedly used for a long time, warping and warping of the door do not occur, And it is an object of the present invention to provide a practical door for distortion and warpage prevention.

In addition, it is possible to prevent twisting and warping even if a wooden door is used instead of a metal door in order to prevent warping and warping, and since the weight of the door itself is lightweight, the door can be conveniently used in everyday life. The object of the present invention is to provide a door for warpage and warpage prevention, in which the value of a door can be increased because a unique texture of the wood and a beautiful and various patterns can be expressed.

In addition, the anti-bending core is provided with a hollow portion inside, and is intended to provide a door for warpage and warpage prevention in which the strength is enhanced by the protrusions and protrusions while the load is light compared to a general core material filled with the core, thereby increasing practicality and efficiency.

To achieve the above object, the present invention provides a door for preventing warping and warping,

A plate formed on front and rear surfaces of the door and spaced apart from each other;

A bending prevention core formed of a metal material so as to prevent the door from being twisted and warped;

An anti-warp core for preventing warpage and warping of the door 100 while being fixed to the anti-warp core material by being combined with the anti-friction core material;

A decorative member formed on a side surface of the plate member to seal between the plate members and having an insertion groove formed in a longitudinal direction on one side thereof;

A decoy plate inserted into the insertion groove of the decorative core member;

And a decorative molding formed between the insert groove of the decorative material and the decorative material to cover the decorative material,

The board, the anti-flexural core, the anti-flexural auxiliary core, and the decorative core are formed of a single integrated module and are coupled to the upper, lower, left, and right sides of the decorative board to form a door,

The bending prevention auxiliary core member is divided into an outer bending prevention core member and an inner bending prevention auxiliary core member and fixed by a fixing member between the front plate member and the back plate member,

The bending prevention core is formed such that two vertical plates are spaced apart from each other between mutually symmetrically spaced horizontally plate members and are formed by an extrusion molding method to form a hollow portion therein and protrusions are formed in four directions of outer surfaces And the protrusions are further protruded at right angles to reinforce the strength of the core material to the four protrusions so as to be positioned between the outer bending prevention auxiliary core and the inner bending prevention auxiliary core.

In addition, the present invention is a door for preventing a warping phenomenon and a warping phenomenon,

A plate formed on front and rear surfaces of the door and spaced apart from each other;

A bending prevention core formed of a metal material so as to prevent the door from being twisted and warped;

An anti-warp core for preventing warpage and warping of the door 100 while being fixed to the anti-warp core material by being combined with the anti-friction core material;

A decorative member formed on a side surface of the plate member to seal between the plate members and having an insertion groove formed in a longitudinal direction on one side thereof;

A decoy plate inserted into the insertion groove of the decorative core member;

And a decorative molding formed between the insert groove of the decorative material and the decorative material to cover the decorative material,

The board, the anti-flexural core, the anti-flexural auxiliary core, and the decorative core are formed of a single integrated module and are coupled to the upper, lower, left, and right sides of the decorative board to form a door,

The bending prevention auxiliary core member is divided into two front bending auxiliary core members and a rear bending prevention auxiliary core member respectively and fixed to the inner surface of the front plate member and the inner surface of the rear plate member respectively by fixing members, The auxiliary core material is bonded to one surface of the core material with the adhesive applied thereto,

The decorating core member is divided into two front decorating cores and a rear decorating core member, respectively, and is fixed to the inner surface of the front plate member and the inner surface of the rear plate member respectively by fixing members. The front decorating core member and the rear decorating core member, And are pressed together by an external pressure device to be formed into one,

The bending prevention core is formed such that two vertical plates are spaced apart from each other between mutually symmetrically spaced horizontally plate members, and a hollow portion is formed by an extrusion molding method, and protrusions are formed in four directions of outer surfaces And a rear anti-warpage auxiliary core member disposed between the front anti-warpage auxiliary core member and the rear anti-warpage auxiliary core member.

In addition, the present invention is a door for preventing a warping phenomenon and a warping phenomenon,

A plate formed on front and rear surfaces of the door and spaced apart from each other;

A bending prevention core formed of a metal material so as to prevent the door from being twisted and warped;

An anti-warp core for preventing warpage and warping of the door 100 while being fixed to the anti-warp core material by being combined with the anti-friction core material;

A decorative member formed on a side surface of the plate member to seal between the plate members and having an insertion groove formed in a longitudinal direction on one side thereof;

A decoy plate inserted into the insertion groove of the decorative core member;

And a decorative molding formed between the insert groove of the decorative material and the decorative material to cover the decorative material,

The board, the anti-flexural core, the anti-flexural auxiliary core, and the decorative core are formed of a single integrated module and are coupled to the upper, lower, left, and right sides of the decorative board to form a door,

The bending prevention auxiliary core member is divided into two front bending auxiliary core members and a rear bending prevention auxiliary core member respectively and fixed to the inner surface of the front plate member and the inner surface of the rear plate member respectively by fixing members, The auxiliary core material is bonded to one surface of the core material with the adhesive applied thereto,

The decorating core member is divided into two front decorating cores and a rear decorating core member, respectively, and is fixed to the inner surface of the front plate member and the inner surface of the rear plate member respectively by fixing members. The front decorating core member and the rear decorating core member, And are pressed together by an external pressure device to be formed into one,

The bending prevention core is formed such that two vertical plates are spaced apart from each other between mutually symmetrically spaced horizontal plates and a hollow portion is formed therein by an extrusion molding method so as to form a gap between the front bending prevention core and the rear bending prevention core And a door for preventing warpage and warpage.

Further, the present invention relates to a door for preventing warpage and warpage, characterized in that an engaging groove is formed between the anti-flexural auxiliary core members of the present invention so as to engage the anti-flexural core member.

Further, the fixing member of the present invention is composed of any one of a bolt, a piece, a screw, and a nail, and is characterized in that a plurality of pieces are stuck to a plate by an airgun device.

The present invention also relates to a door for preventing warpage and warpage characterized in that a space is formed between the deflection preventing auxiliary core material and the decorative core material.

In addition, the door of the present invention is provided with a plurality of hinges so that the door is connected to the door frame, and a knob for opening and closing the door is formed on both sides of the door.

Further, the hinge of the present invention is attached to the door by a fixing member, and the fixing member connected to the hinge is fixed to the bending prevention core member through the plate member so that the hinge can not be easily separated from the door. .

As described above, the door for warping and bending prevention according to the present invention is provided with the anti-warp core, the anti-warp core and the core core vertically between the plates formed on the front and rear sides, It is possible to reduce the cost due to re-installation and replacement due to the warping of the door, which is a practical effect.

In addition, it is possible to prevent twisting and warping even if a wooden door is used instead of a metal door in order to prevent warping and warping, and since the weight of the door itself is lightweight, the door can be conveniently used in everyday life. The unique texture of the wood and beautiful and various patterns can be expressed, which has the effect of increasing the value of the door.

In addition, since the bending prevention core has a hollow portion formed therein, the strength is enhanced by the protrusions and the protrusions while the load is light compared with a general core material filled with the core, thereby increasing practicality and efficiency.

1 is a front view showing a door according to an embodiment of the present invention,
FIG. 2 is a cross-sectional view showing the AA portion of FIG. 1,
3 is an enlarged view showing a portion B in Fig. 2,
Figure 4 is an exploded view of Figure 3,
5 and 6 are exploded views of a door according to another embodiment of the present invention,
7 is a plan view showing various anti-flexural members according to an embodiment of the present invention.

The present invention having such characteristics can be more clearly described by the preferred embodiments thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing in detail several embodiments of the present invention with reference to the accompanying drawings, it is to be understood that the present invention is not limited to the details of construction and the arrangement of components shown in the following detailed description or illustrated in the drawings will be. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front," "back," "up," "down," "top," "bottom, Expressions and predicates used herein for terms such as "left," " right, "" lateral, " and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation. Also, terms such as " first "and" second "are used herein for the purpose of the description and the appended claims, and are not intended to indicate or imply their relative importance or purpose.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

FIG. 1 is a front view showing a door according to an embodiment of the present invention, FIG. 2 is a sectional view showing a portion AA in FIG. 1, FIG. 3 is an enlarged view showing a portion B in FIG. 2, FIGS. 5 and 6 are exploded views showing a door according to another embodiment of the present invention, and FIG. 7 is a plan view showing various anti-flexural members according to an embodiment of the present invention.

1 to 7, the door 100 for warping and bending prevention according to the present invention is a door 100 used for entrance and exit, and includes a plate 10 made of wood, a warp prevention auxiliary core 30, , A decoupling core material (40), and a decoupling plate material (50), and further includes a bending prevention core (20) made of a metallic material.

Here, the plate 10, the anti-flexural core 20, the anti-flexural auxiliary core 30, and the decorative core 40 are constituted by one integral module, and the one module is disposed around the decorative plate 50 One door 100 is formed in the upper, lower, left, and right sides.

(Embodiment 1)

1, 5 and 7, the plate member 10 is formed of a rectangular wooden plate, and is formed on the front and rear surfaces of the door 100, and the front plate member 10a and the rear plate member 10b (10b) are spaced apart from each other by a predetermined distance, and are provided with a bending prevention core (20), a bending prevention auxiliary core (30), and a decorative core (40). At this time, the plate 10 uses various kinds of wood such as plywood.

5 and 7, the anti-bending core 20 is formed of a metal such as aluminum to prevent the door 100 from being twisted and warped by being formed between the plate members 10. The anti- (20) is not directly in contact with the plate member (10) but is connected to the plate member (10) in a state of being coupled to the bending prevention auxiliary core member (30).

7 (a), the two pieces of plate material are spaced apart from each other by mutually symmetrically and spaced apart from each other, and are formed into a rectangular shape in a horizontal section, and the hollow portion The two vertical plates 20c and 20d are spaced apart from each other and are connected to each other between the horizontally spaced horizontal plates 20a and 20b, Is formed in a horizontal cross section so as to be positioned between the front bending prevention auxiliary core member 30a and the back bending prevention auxiliary core member 30b so that the hollow portion 23 is formed inside the bending prevention core member 20 ) Is reinforced.

If the bending prevention core 20 is a simple straight line, the bending prevention core 20 of the present invention is formed into a shape as shown in FIG. 7 (a), while the strength is weak so that the bending prevention core 20 is easily exposed to warping and bending of the door 100 The door 100 does not easily twist and warp.

As shown in FIG. 5, the bending prevention auxiliary core member 30 is formed of wood and is provided between the plate members 10, and is coupled with the bending prevention core member 20 to fix the bending prevention core member 20 Thereby preventing the door 100 from being warped and warped.

Each of the bending prevention auxiliary core members 30 is divided into two front bending prevention auxiliary core members 30a and a rear bending prevention auxiliary core member 30b so that the inner surface of the front plate member 10a and the inner surface of the back plate member 10b And the front and backward bending prevention core members 30a and 30b are mutually brought into contact with each other in a state that the adhesive agent is applied to one side of the front side bending prevention auxiliary core member 30a and the rear side bending prevention auxiliary core member 30b, . At this time, the front bending prevention auxiliary core member 30a is fixed to the inner surface of the front plate member 10a and the rear bending prevention auxiliary core member 30b is fixed to the inner surface of the rear plate member 10b by a fixing member (not shown).

" 형태로 형성된다.The coupling grooves 31 are formed on the surfaces of the bending prevention auxiliary core members 30 corresponding to each other so that the bending prevention core member 20 is engaged. 20, the cross-sectional shape being "

Quot; shape.

5, the decorative material 40 is formed on the side surface of the plate material 10 to seal the space between the plate materials 10, and one side surface of the decorative material 40 is provided with insertion grooves 41 And a decoration plate 50 is inserted into the insertion groove 41. [ At this time, the other side of the plate 10 is closed by the bending prevention core 20.

The decorative material 40 is formed in a horizontal cross-sectional shape by forming an insertion groove 41 on one side surface thereof, and a decorative sheet material 50 is inserted into the insertion groove 41. The decorative sheet material 50 50, upper, lower, left and right decoupler core members 40 are provided.

5, the decorating core 40 is divided into two front decorating cores 40a and a rear decorating coring member 40b so that the inner surface of the front plate member 10a and the inner surface of the rear plate member 10b are divided into a front fixing member 40a, And the front decorative unit 40a and the rear decorative unit 40b are mutually brought into contact with each other in a state in which the adhesive agent is coated on one side of the front decorative unit 40a and the rear decorative unit 40b. At this time, the front decorative panel 40a is fixed to the front panel 10a, and the rear decorative panel 40b is fixed to the rear panel 10b with fixing members.

As shown in FIGS. 1 and 5, the decorative plate 50 is a plate formed at a central portion of the door 100. In the present invention, the design can be changed into various shapes such as a rectangular shape and a square shape.

In addition, various patterns or the like may be formed on both sides of the decorative plate 50, and various types of members may be attached to express the beautiful and beautiful shape of the door 100.

The decorating molding 60 is formed between the insertion groove 41 of the decoration material 40 and the decoration material 50. The decoration molding 60 is formed on the front and rear material sheets 10b, The portion where the decoration plate 50 is inserted into the insertion groove 41 of the decoration core member 40 is not exposed to the outside by the decoration molding 60 so that the door 100 is further strengthened.

(Second Embodiment)

The plate member 10 is the same in structure, shape, and material as the plate member 10 of the first embodiment, so that no other description is given. Please refer to FIG. 1 to FIG.

As shown in FIGS. 2 to 4 and 7, the anti-bending core 20 is formed of a metal such as aluminum to prevent warping and warping of the door 100 formed between the plate members 10, The bending prevention core 20 is not directly contacted to the plate member 10 but is connected to the plate member 10 while being coupled to the bending prevention auxiliary core member 30. [

7B, the two pieces of plate material are spaced apart from each other and are spaced apart from each other, and the hollow portion 23 is formed by an extrusion molding method And protrusions 21 are protruded from the outer surface in four directions. That is, the two pieces of vertical plate members 20c and 20d are spaced apart from each other between the horizontal plate members 20a and 20b which are mutually symmetrically and spaced apart from each other, and the hollow portion 23 And protrusions 21 are formed in the four directions of the outer surface so as to protrude therefrom so as to be positioned between the front bending prevention auxiliary core member 30a and the back bending prevention core member 30b So that the strength of the anti-flexural member 20 is reinforced.

If the bending prevention core 20 is a simple straight line, the strength is weak so that the bending prevention core 20 of the present invention is easily exposed to warping and bending of the door 100, The door 100 does not easily twist and warp.

" 형태로 형성된다.The bending prevention auxiliary core 30 has the same structure as the bending prevention auxiliary core 30 of the first embodiment except that the coupling groove 31 of the bending prevention auxiliary core 30 has In accordance with the outer shape,

Quot; shape.

The decorative material (40) is the same as the decorative material (40) of the first embodiment. Please refer to Figs. 3 to 4.

The decor sheet material 50 has the same structure, structure, and shape as those of the decor sheet material 50 of the first embodiment, so that no other description is given. Please refer to FIG. 1 to FIG.

(Third Embodiment)

The plate member 10 is the same in structure, shape, and material as the plate member 10 of the first embodiment, so that no other description is given. Please refer to Fig. 1 and Fig.

6 and 7, the bending prevention core 20 is formed of a metal material such as aluminum to prevent the door 100 from being twisted and warped, (20) is not directly in contact with the plate member (10) but is connected to the plate member (10) in a state of being coupled to the bending prevention auxiliary core member (30).

7 (c), the two pieces of the plate members are separated from each other by mutually symmetrically spaced apart plate members, and the hollow portion 23 is formed by the extrusion molding method The protrusions 21 are protruded in four directions of the outer surface and the protrusions 22 are further protruded at right angles to reinforce the strength of the core 20 to the four protrusions 21. As a result, The strength of the core 20 is further reinforced. That is, the two pieces of vertical plate members 20c and 20d are spaced apart from each other between the horizontal plate members 20a and 20b which are mutually symmetrically and spaced apart from each other, and the hollow portion 23 The protrusions 21 are protruded in four directions of the outer surface and the protrusions 22 are further protruded at right angles to reinforce the strength of the core 20 to the four protrusions 21 And is located between the auxiliary core member for preventing external bending and the auxiliary core member for preventing internal bending.

In contrast, when the bending prevention core 20 is a simple straight line, the bending prevention core 20 of the present invention is formed in the shape of (c) in FIG. 7, while the strength is weak so that the bending prevention core 20 is easily exposed to warping and bending of the door 100 The door 100 does not easily twist and warp.

" 형태로 형성된다.The bending prevention auxiliary core 30 has the same structure as the bending prevention auxiliary core 30 of the first embodiment except that the coupling groove 31 of the bending prevention auxiliary core 30 has In accordance with the outer shape,

Quot; shape.

6, the decor core material 40 is formed on the side surface of the plate material 10 to seal the space between the plate materials 10, and one side surface of the decor core material 40 is provided with insertion grooves 41 And a decoration plate 50 is inserted into the insertion groove 41. [ At this time, the other side of the plate 10 is closed by the bending prevention core 20.

The decorative material 40 is formed in a horizontal cross-sectional shape by forming an insertion groove 41 on one side surface thereof, and a decorative sheet material 50 is inserted into the insertion groove 41. The decorative sheet material 50 50, upper, lower, left and right decoupler core members 40 are provided.

The decorating core material 40 is formed of one decorating core material 40 different from the decorating core material 40 of the first embodiment. That is, the decorating core material 40 of the first and second embodiments is constituted by the front decorating core material 40a and the rear decorating core material 40b, and the decorating core material 40 of the third embodiment is constituted by one. The decorating core 40 may be composed of a front decorating core 40a and a rear decorating core 40b as in the first and second embodiments and may be designed according to the manufacturing process and the shape of the door 100 It is possible to change.

The decor sheet material 50 has the same structure, structure, and shape as those of the decor sheet material 50 of the first embodiment, so that no other description is given. Please refer to Fig. 1 and Fig.

On the other hand, configurations applied to all the first to third embodiments will be described below.

2 to 6, a space 70 is formed between the bending prevention auxiliary core member 30 and the decorative member 40, and the entire door 100 is separated by the space portion 70, The weight of the door can be reduced and the material can be reduced and the door 100 can be prevented from twisting or bending due to the bending prevention core 20 even when the material is reduced.

A plurality of hinges 80 are installed on the door 100 so that the door 100 is connected to the door frame. A handle 90 is formed on both sides of the door 100 to open and close the door 100, The fixing member connected to the hinge 80 is fixed to the bending prevention core member 20 through the plate member 10 and the hinge 80 is fixed to the door 100 by the fixing member, So that the hinge 80 is not easily detached from the door 100. In other words, in the conventional art, the fixing member of the hinge is embedded only in the wood part of the door 100, and the hinge is detached when the door 100 is used for a long time. Therefore, even if the hinge is firmly attached and the door 100 is used for a long time, the fixing member for fixing the hinge is fixed to the bending prevention core material 20 made of metal after passing through the wood part, The work to be removed is obviously reduced.

Hereinafter, the method of manufacturing the door for preventing warping and bending described in the first to third embodiments will be described in detail.

The method for manufacturing the door 100 for warping and bending prevention according to the present invention is characterized in that the warpage prevention core 30 and the decorative core 40 are bolted to the inner surface of the front plate member 10a and the inner surface of the rear plate member 10b, The fixing member is inserted through one side of the bending prevention auxiliary core member 30 or the decorative member 40 so as to fix the inner surface of the front plate member 10a or the rear plate member 10b, A bolt, a piece, a screw, and a nail so as to be fixedly fixed to the inner surface by an air gun device.

The bending prevention auxiliary core member 30 and the decorative core member 40 are vertically divided into two pieces and are fixed to the inner surface of the front plate member 10a and the inner surface of the rear plate member 10b, 30 are in contact with each other and the two decorative members 40 are in contact with each other.

Then, after making mutual contact, they are pressed together by an external pressure device (not shown) to form the deflection preventing auxiliary core member 30 and the decorative core member 40, which are divided into two. In this case, after the bending prevention auxiliary core member 30 is formed into a single piece, the bending prevention core member 20 may be fixedly coupled to the coupling groove 31 formed in the bending prevention auxiliary core member 30, 31 are joined to the other side of the bending prevention core member 20 after the coupling grooves 31 of the other side bending prevention auxiliary core member 30 are joined to each other.

The plate member 10, the bending prevention core member 20, the bending prevention auxiliary core member 30 and the decorative core member 40 are formed as one module and then the upper, The decorative plate material 50 is inserted into the insertion groove 41 of the decorative material 40 to form the basic shape of the door 100. [

Then, the decor molding 60 having the outer surface formed with various patterns is attached in the longitudinal direction between the insertion groove 41 of the decorative core member 40 and the decorative sheet member 50 to form the insertion groove 41 of the decorative core member 40 ) And the decor sheet material 50 are finished. At this time, the decor molding 60 is formed on the front and rear surfaces of the door 100, respectively.

Various patterns are attached to one side or both sides of the decorative plate 50 according to the installation place of the door 100 and the like. Finally, the door 100 is finished by applying a finish material such as painting, flame-retarding, coating or the like.

10: Plate 10a: Front plate
10b: back plate
20: anti-warp core material 20a, 20b: horizontal core material
20c, 20d: vertical core 21:
22: projection 23: hollow part
30: auxiliary core member for preventing warpage 30a: auxiliary core member for preventing warpage
30b: auxiliary core member for preventing backward warping 30c: auxiliary core member for preventing external warping
30d: auxiliary core member for preventing internal warpage 31: engaging groove
40: Deco core material 40a: Front decor core material
40b: rear decor piece 41: insertion groove
50: Deco plate 60: Deco molding
70: space portion 80: hinge
90: Handle 100: Door

Claims (8)

In a door (100) for preventing a twisting phenomenon and a warping phenomenon,
A plate member 10 formed on front and rear surfaces of the door 100 and spaced apart from each other;
A bending prevention core 20 formed between the plate members 10 and made of a metal material to prevent the door 100 from being warped and warped;
A warp preventing auxiliary core 30 formed between the plate members 10 to prevent the warpage and warping of the door 100 while fixing the warpage prevention core member 20 in combination with the warpage preventing core member 20;
A decorative core member 40 formed on a side surface of the plate member 10 to seal between the plate members 10 and having an insertion groove 41 formed in one side surface thereof in the longitudinal direction;
A decoy plate 50 inserted into the insertion groove 41 of the decorating core 40;
And a decor molding (60) formed between the insert groove (41) of the decorating core (40) and the decorating plate (50) and covering the area,
The plate member 10, the bending prevention core member 20, the bending prevention auxiliary core member 30 and the decorative core member 40 are integrally formed as one integrated module so that the decorative member 50 is coupled to the upper, Thereby forming a door,
The bending prevention auxiliary core 30 is divided into an outer bending prevention core 30c and an inner bending prevention core 30d and fixed by a fixing member between the front plate 10a and the back plate 10b,
The two pieces of vertical plate members 20c and 20d are spaced apart from each other and are connected to each other between the horizontal plate members 20a and 20b which are mutually symmetrically spaced from each other. The protrusions 21 are protruded in four directions of the outer surface and the protrusions 22 are further protruded at right angles to reinforce the strength of the core 20 to the four protrusions 21, Wherein the door is positioned between the bending prevention auxiliary core and the inner bending prevention auxiliary core.
The method according to claim 1,
Wherein a coupling groove (31) is additionally formed between the bending prevention auxiliary core (30) and the bending prevention core (20).
The method according to claim 1,
Wherein the fixing member comprises one of a bolt, a piece, a screw, and a nail, and a plurality of the fixing members are stuck to the plate material by an airgun device.
The method according to claim 1,
Wherein the bending prevention auxiliary core member (30) and the decorative core member (40) are spaced apart from each other to form a space portion (70).
The method according to claim 1,
Wherein a plurality of hinges 80 are installed on the door 100 so that the door 100 is connected to the door frame and a handle 90 capable of opening and closing the door 100 is formed on both sides of the door 100. [ And a bending prevention door.
6. The method of claim 5,
The hinge 80 is attached to the door 100 by a fixing member and the fixing member connected to the hinge 80 is fixed to the bending prevention core 20 through the plate 10 so that the hinge 80 can be easily So as not to be detached. delete delete

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