KR100388547B1 - The transformation-type door frame - Google Patents

Abstract

The present invention, in the variable door frame made of a main frame member for covering the front surface of the crest frame installed on the front side of the wall width, and a finishing material that is combined to the side ends of each of the main frame member to cover the side of the crest frame, the finish is finished, The first protruding member having a protruding jaw extending from the bent piece and having a protruding jaw formed on the back side of the bent piece being bent from an extension piece having an insertion groove formed on one side of the curved portion having a guide groove on the rear side, and a front part side extending to one end. The second groove member is formed in the coupling groove is formed in the guide groove on the rear side of the curved portion, the other end is formed integrally formed by the extension portion formed with the bent portion and the stepped end, and the guide groove is formed in one end of the rear side The first finishing material surrounding the protruding jaw of the one bending member for one cast member, and a guide groove is formed on one side of the rear surface side and formed with the extension of the second casting member. Insertion protrusions are inserted in both directions to couple the first and second jugs together by forcing the second finishing material to be joined, the back side coupling grooves of the first jug member and the front side coupling grooves of the second jug member. Consists of a mold member having an integrally formed coupling member and an insertion fixing part integrally formed in the diagonal direction from the lower side of the main body to fit into the insertion groove between the extension piece extending on the horizontal line from the curved portion of the first casting member As an image feature,

By applying the variable door frame according to the present invention in the field without being limited to the width of the wall of the building, it can be installed in accordance with the width of the wall, the effect of reducing the cost of construction air and construction cost and maintenance costs,

Each joint member can maintain a firm connection with each other, so that even if deformation or distortion of the crest frame occurs or distortion between the members for the mainframe, it is fixed by a plurality of fixing means such as respective insertion protrusions and coupling members. As a result, the present invention relates to a variable door frame, which can completely prevent the occurrence of gaps and gaps between the main frame members and between the main frame members and the crest frame, and to maintain the beautiful variable door frame at all times. .

Description

Convertible door frame {The transformation-type door frame}

The present invention relates to a door frame for supporting a door, and in particular, the width of the construction to suit the width of the wall to be able to actively cope with the thickness of the wall to be installed in the door of each room partitioning the room at the finishing stage of the interior construction when building construction An adjustable door frame is adjustable.

When constructing a building such as an apartment, after completion of the basic construction, the construction of walls, floors, and door frames is divided and divided into rooms, and the doors are filled before the construction of the walls. For installation, a temporary door frame is formed. Based on the installed temporary door frame, a wall is formed through masonry or concrete pouring work, finishing of plastering and floor surface, and the door frame is added to the door frame. After finishing the work, such as painting and finishing work, the door is mounted to complete the work.

In this way, the door frame for supporting the door (door) in general should have a width suitable for the thickness of the wall including the door frame with the opening to be installed in consideration of the interior aesthetics.

In the conventional manufacturing of the door frame to be installed in the opening, the door frame frame must be made to order after the width of the door frame is determined after the width of the door frame is formed after the curing of the masonry or pour concrete. As well as the delay of the air considerably, the construction cost of the door frame must be made according to the design conditions at each construction site, there is a problem that the construction cost is significantly increased.

In addition, even if the construction work is carried out by a single design drawing, the wall thickness must be different depending on the location of the wall or the building depending on the design conditions of the building such as strength strength, and even the same building can be used for the construction of the formwork or the wall finishing The wall thickness is not uniform depending on the interior and exterior material selection conditions.

Therefore, when the door frame construction under these conditions can not be constructed by the ready-made door frame, it must be made to order according to the conditions or forced construction of the door frame that does not match the thickness of the wall, the installation finishing process is poor or other walls There is a problem such as being incompatible with the door frame installed in the spoiled aesthetics.

In addition, when the door frame construction is inconsistent due to such construction errors, re-construction work has to be performed again, and problems such as affecting other processes, such as causing delays in other air, have been pointed out.

In addition, the existing door frame is mainly in the shape of a square, so when transporting a large amount of furniture, such as long farms, etc. into the room, the outer surface of the angled square frame or angular parts are damaged by the furniture. If the case occurs frequently, there was a problem such as expensive furniture materials, as well as the operational problems such as the need to perform a renovation work on the door frame that was tried.

Thus, rather than using ready-made door frames, variable door frame constructions are being carried out to variably construct door frames according to site conditions.In general, insert a frame into the opening of a door and insert a wedge as necessary to check horizontal and vertical. After adjusting the height of the frame, fix the frame to the wall width with several concrete nails or anchors on the left and right, fill the empty opening with Malta and plaster it in the same way as the wall surface. Before installing the lower cover plate and the upper cover plate, and then use the variable door frame construction by the anchor method that finishes by door molding, or check the horizontal and vertical height after the door frame is set up to secure the door frame. After installing the support on both sides, make sure the anchors on both sides of the door frame are sandwiched between the masonry walls and filled with Malta. A method for construction of a door frame in a manner such as masonry construction method for finishing the adjustment, and adjustment.

Among them, in order to solve the above-mentioned problems, "the first cover and the second cover, which is a synthetic resin extrudate that can cover the inner side of the wooden door frame, the first cover is bent and horizontally wrapped around one corner of the wooden door frame An extension part is formed, and the second cover includes a bent part surrounding the other edge of the wooden door frame, and a size to overlap a part of the horizontal extension part of the first cover, and includes a groove into which the packing contacting the door is fitted. Utility model registration No. 256745 filed and pre-registered with the Korean Intellectual Property Office is disclosed as shown in FIG.

However, in the case of the prior art described above, the nail 13 is required to fix the first cover 2 to one side of the wooden door frame 1, such as the wooden door frame 1 or the first cover 2, etc. The material may be damaged.

In addition to having the horizontal extension (7, 10) to cover the other side of the wooden door frame (1) by the bent portion 6 is bent to one side at the same time to cover the horizontal extension (4) of the first cover (2) The second cover 5 for the horizontal extension portion 4 of the wooden door frame 1 and the first cover 2 only by a nail 13 penetrating between the bent portion 6 and the wooden door frame (1). Since the cover has a fixed structure, the horizontal extension portion 10 is supported only by the nail 13 of the one side bent portion 6 of the second cover 5 and the horizontal extension portion of the first cover ( 4) Because it is a shape that covers, its fixed state is very unstable, and after construction is completed, it may be deformed or distorted due to external conditions of the wooden door frame 1 or by bending or warping of the second cover 5 or its own load. There is a problem that a gap occurs or floats between the horizontal extension part 4 of the second cover 5 and the horizontal extension part 4 of the first cover 2 due to the deformation force, thereby damaging the aesthetics. It is being enemy.

In addition, as described above, the maintenance and the like must be periodically performed by the deformation caused by the change in the physical properties of the materials such as the first and second covers 2 and 5 and the wooden door frame 1, thereby increasing the maintenance cost. And troublesome problems such as the need for additional repair work have been pointed out.

In addition, when the opening and floating phenomenon between the horizontal extension portion 10 of the second cover 5 and the horizontal extension portion 4 of the first cover 2 is left unattended, in the process of introducing various furniture into or out of the room, etc. Since the second cover 5 is fixed and supported only by the nail 13 on the side of the wooden door frame 1 due to the phenomenon that the second cover 5 is impacted, the second cover 5 is completely covered by the impact force. Problems such as detachment from the door frame 1 or a widening phenomenon may occur.

In addition, after covering the wooden door frame (1) by the first cover (2) and the second cover (5), and again provided with a finishing material for closing the side of the first, second cover (2, 5) again Since the finish must be treated by a method such as adhesion, there is a problem such that the construction process is complicated.

Therefore, the present invention has been made to solve the above problems,

In order to provide a door frame that provides visual beauty while mounting a door after partitioning the interior of the building and forming a room, the structure of the door frame can be easily, quickly and accurately constructed on the site by varying the width of the wall. The purpose is to provide a door frame that can be adjusted in width to reduce the construction air and construction cost.

In addition, the present invention, when formed in the frame to be fixed by the coupling between the main frame member, so as to form a more firmly fixed between each of the member for the main frame so that even if an impact from the outside, deformation or distortion of the frame is generated The purpose is to completely prevent gaps and gaps between the members for the juttle contact.

In addition, the present invention can be actively cope with each work site conditions, and also to the wall or the width of the wall by varying the site conditions, namely the width or width of the frame by the simple construction work. By making it possible to construct a custom door frame without relying on separate order production, it not only improves the interior aesthetics, but also shortens the construction process and omits unnecessary procedures and costs such as separate order production, and lowers the price due to mass production supply. Another purpose is to expect a reduction in construction cost.

1 is an exploded perspective view of each part of the variable door frame according to the present invention;

Figure 2 is a perspective view showing a state in which the variable door frame is coupled to the frame by the present invention,

Figure 3a, b, c is a cross-sectional view showing a process of coupling between the first order frame member and the second order frame member according to the present invention,

Figure 4 is a perspective view of each other showing another embodiment of the first and second cast member for the present invention,

5 is a plan sectional view showing a state coupled by FIG.

Figure 6 is a view showing that the construction is formed by forming a mounting groove on one side in the crest frame showing a deformable state in the present invention,

7 is a cross-sectional view showing that the construction can be changed by changing the position of the insertion protrusions of the finishing member and each caster member,

8 is a schematic enlarged cross-sectional view showing yet another embodiment of the present invention;

9 is a view showing the configuration of a conventional variable door frame.

※ Brief description of the main symbols in the drawings

100; First cast member 110; Curved portion 111; Insert groove

112; Engaging groove 113; Guide groove 120; Extension

130; Bent piece 131; Insertion protrusion 132; Protruding jaw

140; Mold material 141; Main body 142; Insertion

150; Protrusion 200; Second jug member 210; Combined groove

220; Bend 230; Extension 240; Joining member

241,242; Insertion protrusion 250; Coupling protrusion 300; 1st finishing material

310; Guide groove 400; Second finishing material 410; Guide

500; Frame 501,501 '; Groove 502; Home

W; Wall P; Takapin

The present invention for achieving the above object,

The main frame member (100,200) for covering the front surface of the frame (500) is installed on the front side of the wall (W) width, and coupled to the side ends of each of the member (100,200) for covering the side of the frame 500 In the variable door frame made of finishing materials (300, 400) to be finished,

Insertion protrusion 131 is formed on the back side of the bending piece 130 that is bent from the extension piece 120 in which the insertion groove 111 is formed on one side of the curved part 110 having the guide groove 113 on the rear side, and the bending piece ( First cast member 100 having a protruding jaw 132 extending from 130,

Coupling groove 210 is formed on the front end side extending to one end and is located in the rear guide groove 113 of the curved portion 110, the other end is extended portion 230 is formed bent portion 220 and stepped The second cast member 200 is formed integrally with,

The first finishing member 300 is formed to surround the protruding jaw 132 of the bending piece 130, the guide groove 310 is formed at one end of the back side,

The second finishing material 400 is coupled to the extension portion 230 of the second main member member 200 is formed with a guide groove 410 on one side,

The first and second cast member members 100 and 200 are forcibly fitted into the rear coupling groove 112 of the first cast member 100 and the front coupling groove 210 of the second cast member 200. A coupling member 240 in which both insertion protrusions 241 and 242 are integrally formed to engage with each other,

The main body 141 is composed of a mold member 140 having an insertion fixing part 142 integrally formed in an oblique direction from the lower side, the first main member member 100 and the second main member member 200 is a crest frame (500) Covering the front side and the first finishing material 300 and the second finishing material 400 covers the side of the crest frame 500 and at the same time configured to be in direct contact with the first and second casting member (100,200) It features.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

(First embodiment)

The present invention is fixed to the main frame member (100,200) for covering the front side of the frame (500) formed of a material such as a tree formed on the front side of the wall (W), and is fixed to the side surface of the main member (100,200) Finishing material (300, 400) for covering the side of the wall (W) and the crest frame 500, and the coupling member 240 to enable a fixed coupling between the main member (100, 200).

The housing member (100,200) is to cover the front side of the crest frame 500, as shown in Figure 1 is composed of the first housing member 100 and the second housing member 200 is separated.

The first jug member 100 is to cover the front center of the crest frame 500 and one side of the crest frame 500, the second jug member 200 is the first jug member 100 It is coupled to the wall (W) width, that is to enable the variable control of the length in accordance with the width of the frame 500 and at the same time to cover the other side of the frame 500.

In such a configuration, as shown in FIG. 1, the first casting member 100 is rounded so that the front portion is formed as the curved portion 110, and an extension piece extending on the horizontal line at the end of the curved portion 110. The 120 is integrally formed, and the protruding jaw 132 is further extended at the same time as the bending piece 130 is vertically bent at the end side of the extension piece 120. The protruding jaw 132 and the bending piece 130 are formed such that the stepped jaw is formed so that the guide groove 310 of the first finishing material 300 to be described later is combined in a shape surrounding the protruding jaw 132.

In addition, by forming the insertion protrusion 131 having an arrow shape toward the rear side of the bending piece 130 to be fixed and coupled to the side of the frame 500.

On the other hand, the rear side of the curved portion 110 to form a guide groove 113 to be joined to the second cast member 200 to be described later to be able to adjust the length according to the width of the frame 500, For example, when the width of the crest frame 500 is considerable, the bent part 220 and the extension part 230 of the second casting member 200 are fixed to the side of the crest frame 500 in advance. By changing the position of the first jug member 100 according to the width of the) is to be able to actively fix the first and second jug member 100,200 according to the width of the frame 500.

In addition, a plurality of coupling grooves 112 are formed on the rear side of the first casting member 100, and the coupling groove 112 is formed by a separate coupling member 240 of the second casting member 200. Is to be coupled to the front side coupling groove 210.

Meanwhile, an insertion groove 111 is formed between the extension pieces 120 extending horizontally at the point where the curved portion 110 of the first casting member 100 ends, and inserted into the insertion groove 111. The forming of the mold material 140 is pressed.

Such a mold member 140 has a shape as shown in FIG. 1, and forms an arrow-shaped insertion fixing portion 142 integrally formed in one direction from one side of the main body 141 to form the insertion fixing portion ( 142 is inserted into and fixed to the insertion groove 111 of the first casting member 100 by a forced interference fit, thereby acting as a finishing treatment to provide a beautiful appearance.

In this case, the second cast member 200 covers the side surface of the crest frame 500 as described above, and is fixed to the inside of the guide groove 113 of the first cast member 100 at a limited distance. It is fixed to the one jug member 100, the second jug member for which one side is integrated into the guide groove 113 of the first jug member 100 to have a flat "┏" shape as shown in Figure 3a The other end of the bent portion (200) is bent portion 220 and the extension portion 230 extending from the bent portion 220 to form a step is integrally formed so that the bent portion 220 and the extension portion 230 The back side of the will be to cover the side of the frame 500.

In this case, the same coupling groove 210 as the coupling groove 112 of the first casting member 100 is formed on the front side of the second casting member 200.

As described above, the coupling groove 210 is to facilitate the fixed coupling between the first and second member members 100 and 200 for the second jug member by a separate coupling member 240, the coupling member ( 240, the insertion protrusions 241 and 242 having arrow shapes in both directions are integrally formed as shown in FIG. 1 or FIG. 3C, so that each of the insertion protrusions 241 and 242 is coupled to the first and second cast member 100 and 200, respectively. The grooves 112 and 210 are fitted by a forced restraint fitting method so as to be mutually fixed.

The finishing materials 300 and 400 are provided at the end sides of the first and second cast member members 100 and 200 covering the front and side surfaces of the crest frame 500, thereby increasing the aesthetics, and the wall W and the crest frame ( To finish the joint of the 500, the wall (W) and the frame (500) is composed of first and second finishing materials (300, 400) to cover both sides.

The first finishing member 300 is a member that is finished by forming a shape surrounding the protruding jaw 132 extending from the bending piece 130 of the first cast member 100 described above. A guide groove 310 is formed to allow the protrusion 132 to be integrated therein.

At this time, according to the protruding length of the crest frame 500 formed on the front side of the wall (W) can be fixed by transferring the first finishing material 300 back and forth a predetermined length, for example, a crest protruding to the front side of the wall (W). When the protruding length of the frame 500 is considerable, the first finishing material 300 for joining the protruding jaw 132 of the first main member 100 for covering the front side of the frame 500 is rearward on the drawing. The side surface of the first casting member 100 and the first finishing material 300 are coupled to each other so that the protruding jaw 132 is moved to a predetermined length in the guide groove 310 of the first finishing material 300. The overall length can be extended to finish.

Such technical means are disclosed in patent application No. 2002-12777 filed by the present applicant.

On the other hand, the second finishing material 400 is a means for internally fixing the extension 230 of the second cast member 200 and covering the wall (W) and the crest frame (500), as shown in the drawing The guide groove 410 for joining the extension portion 230 of the second cast member 200 has a configuration formed at one end.

The guide groove 410 as described above provides a configuration to actively change the coupling length according to the protruding length of the frame 500 formed on the front side of the wall (W).

(Second embodiment)

In the above embodiment, a plurality of coupling grooves 112 are formed on the rear side of the first casting member 100, and the coupling groove 210 is formed on the front side of the second casting member 200 corresponding thereto. After providing a configuration to be fixed by the coupling member 240 to be fixed to each of the coupling grooves 112 and 210 by a forced interference fit, in the second embodiment as shown in FIG. A protrusion 150 is formed to be uniformly angularly protruded in an oblique direction to the rear side of the member 100, and is coupled to the protrusion 150 and engaged with the front side of the second casting member 200 corresponding thereto. To form a coupling protrusion groove 250 having an angle in the angular direction corresponding to the oblique angle of the protrusion 150 to have a.

Therefore, in the coupling method according to the above configuration, after fixing the second casting member 200 to the frame 500, bending the other end of the first casting member 100 according to the width of the frame 500. In the state in which the insertion protrusion 131 of the piece 130 is fixedly coupled to the crest frame 500 and temporarily coupled, the rear side protrusion 150 of the first casting member 100 is placed on the second casting member 200. It is to be fixed by coupling with the front side coupling protrusion groove (250).

(Third embodiment)

8 is an enlarged cross-sectional view showing yet another embodiment of the present invention.

As shown in the accompanying drawings, a plurality of filling grooves 114 are formed on the rear side of the first casting member 100 of the present invention, and a plurality of filling grooves are formed on the front side of the second casting member 200 corresponding thereto. 211 may be formed, and the adhesive A may be filled into each of the filling grooves 114 and 211 to be bonded and fixed.

At this time, in order to further double the elastic force of the first cast member 100, it is preferable to form the groove B toward the rear side, the groove B is not limited to this embodiment, of course.

The following describes the joining procedure or work procedure by each of the above configurations.

First, when a crest frame 500 is formed on a wall of an opening side in which a room is formed by dividing an interior of a building, a second main frame is used to cover an inclined front surface side of the crest frame 500, as shown in FIG. 3A. In the state in which the member 200 abuts on one side of the crest frame 500, the crest frame 500 and the second jug member 200 are passed by the "c" shaped takapin (P) using a Taka tool or the like. Add up.

Then, as shown in FIG. 3b, a groove formed at a corresponding position of the frame 500 in advance by using the insertion protrusion 131 protruding toward the rear side of the bent piece 130 bent to the other end of the first casting member 100. At 501, one side of the first casting member 100 is temporarily coupled by a forced interference fitting method.

Then, the insertion protrusion 242 on the other side of the coupling member 240 in a state where the insertion protrusion 241 of the coupling member 240 is temporarily fixed to the coupling groove 210 formed on the front side of the second casting member 200. Is arranged on the rear side of the first housing member 100, a plurality of coupling grooves 112 formed for the first of the position corresponding to the position of the coupling groove 210 of the second housing member 200 The member 100 is positioned in the coupling groove 112 to be forced to be inserted and coupled.

Therefore, after the second cast member 200 temporarily coupled as described above is properly positioned in the guide groove 113 of the first cast member 100, the first cast member 100 is coupled as described above. The member 240 is to be able to be firmly fixed to each of the caster member (100,200) mutually.

Here, the coupling groove 210 of the second cast member 200 is to be formed only one coupling groove 210, the corresponding coupling groove 112 of the first cast member 100 is a plurality of Since the insertion length of the second caster member 200 positioned in the guide groove 113 of the first caster member 100 may vary according to the width of the crest frame 500, the active part is active accordingly. In order to provide a structure that can be easily fixed by varying the setting position of the combination according to the width of the crest frame (500).

Then, the tacho pin (P) by the Taka tool as the insertion groove 111 of the first casting member 100 is shot into the insertion groove 111, the first casting member 100 and the frame 500 After fixing the bar more firmly, the mold member 140 having an insertion fixing part 142 having an arrow shape is fixed to the insertion groove 111 by a forced fitting so as to have a beautiful appearance in appearance.

On the other hand, as shown in Figure 4 by the second embodiment by the second side inclined at a predetermined angle to the back side of the first casting member 100 and a plurality of protrusions formed in the oblique direction in the oblique direction and the second column corresponding thereto Referring to the coupling operation procedure when the coupling protrusion 250 is formed to protrude in the direction opposite to the inclined direction of the protrusion 150 to the front side of the frame member 200, as described above, the second week After the bent portion 220 of the frame member 200 is brought into contact with the side surface of the frame 500, the first tool member 100 is temporarily coupled using a takapin (P) or the like using a taka tool. The first casting member 100 for the above-described first casting member 100 in a state in which the insertion protrusion 131 protruding toward the rear side of the bending piece 130 is fixed by fitting into the groove 501 previously drilled on the side of the crest frame 500. ) And the protrusions 150 and the coupling protrusions 250 of the second casting member 200 in a staggered shape By the fixed coupling configuration, each of the main cast member (100,200) can be firmly fixed to the crest frame (500).

By completing the work to cover the frame 500 by the first and second cast member (100,200) by the method as described above, using the finishing material (300,400) on the end side of each cast member (100,200) The second finishing material 400 having a guide groove 410 surrounding the extension portion 230 side of the second casting member 200, the wall (W) and the crest frame 500 abuts The wall is covered using the first finishing material 300 having a guide groove 310 which covers the part and is fixed by using an adhesive means such as an adhesive, and also surrounds the protruding jaw 132 of the first casting member 100. The other side of the (W) and the part where the frame frame 500 abuts is fixed and covered using an adhesive means such as an adhesive.

Here, as shown in FIG. 6, after forming the seating groove 502 in the frame 500, the second groove is fitted into the seating groove 502 to maintain a smooth state with the side surface of the frame 500. The member 200 may be formed, and the second finishing material 400 may cover the side surface of the crest frame 500 and the wall W. FIG.

Meanwhile, as shown in FIG. 7, the bending piece 130 of the first casting member 100 is brought into contact with the frame 500 by using a takapin (P), and the bending portion of the second casting member 200 ( 220) The insertion protrusion 131 'is formed on the rear side to be inserted into the groove 501' pre-drilled in the frame 500 by force insertion and fixation, and the first and second casting members 100 and 200 according to the above procedure. Can be fixed to the liver to cover the frame.

In addition, as shown in FIG. 8, a plurality of filling grooves 114 and 211 are formed in the rear and front portions of the first and second jug members 100 and 200, respectively, and the filling grooves 114 and 211. By bonding and fixing the adhesive (A) in the joint, the joining and fixing of the frame can be performed fairly simply and quickly.

Such work is a part that can be variously changed by the workplace and those skilled in the art, and of course included in the rights of the present application.

Therefore, according to the present invention, by applying the variable door frame according to the present invention in the field, regardless of the width of the wall of the building, it can be installed in a short time according to the width of the wall, the cost of construction air, construction cost and maintenance costs, etc. It can be expected to reduce the effect.

In addition, the mass-produced variable door frame enables the installation and installation of the door frame according to the wall width actively according to other conditions, it can be expected to reduce the production cost of the variable door frame.

In addition, according to the present invention, it is possible to maintain a firm coupling between each of the caster members, even if the deformation or distortion of the crest frame or the distortion of the caster member occurs a plurality of fixing means, such as between each insertion protrusion and the coupling member Since the fixed state is maintained by, it is possible to completely prevent the occurrence of gaps and gaps between the members of the jug and between the members of the jug and the crest of the frame, so that the effect of maintaining the variable door frame in a beautiful state can be expected. have.

Claims (3)

The main frame member (100,200) for covering the front surface of the frame (500) is installed on the front side of the wall (W) width, and coupled to the side ends of each of the member (100,200) for covering the side of the frame 500 In the variable door frame made of finishing materials (300, 400) to be finished, Insertion protrusion 131 is formed on the back side of the bending piece 130 that is bent from the extension piece 120 in which the insertion groove 111 is formed on one side of the curved part 110 having the guide groove 113 on the rear side, and the bending piece ( First cast member 100 having a protruding jaw 132 extending from 130, Coupling groove 210 is formed on the front end side extending to one end and is located in the rear guide groove 113 of the curved portion 110, the other end is extended portion 230 is formed bent portion 220 and stepped The second cast member 200 is formed integrally with, The first finishing member 300 is formed to surround the protruding jaw 132 of the bending piece 130, the guide groove 310 is formed at one end of the back side, The second finishing material 400 is coupled to the extension portion 230 of the second main member member 200 is formed with a guide groove 410 on one side, The first and second cast member members 100 and 200 are forcibly fitted into the rear coupling groove 112 of the first cast member 100 and the front coupling groove 210 of the second cast member 200. A coupling member 240 in which both insertion protrusions 241 and 242 are integrally formed to engage with each other, Insertion fixing part integrally formed in a diagonal direction from the lower side of the main body 141 to be fitted into the insertion groove 111 between the extending portion 120 extending from the curved portion 110 to the horizontal line from the first casting member 100 A variable door frame comprising a mold material 140 having a 142 configurationally. The method of claim 1, Forming a protrusion 150 projecting obliquely to the rear surface side of the first cast member 100, and in a staggered direction to be coupled to the protrusion 150 to the front side of the second cast member 200 corresponding thereto. Variable door frame comprising a coupling protrusion 250 is formed. The method of claim 1, A plurality of filling grooves 114 are formed on the rear side of the first jug member 100, and a plurality of filling grooves 211 are formed on the front side of the second jug member 200 corresponding thereto, respectively. A variable door frame comprising filling and bonding the adhesive (A) into the grooves (114, 211).