KR200393393Y1 - Assembly door apparatus of a multipurpose room - Google Patents

Abstract

Prefabricated door of the multipurpose room to quickly and easily install the door device installed in the multipurpose room provided for storing household consumables or cleaning tools on the veranda of an apartment or multi-family house according to the condition of the ceiling and the floor of the veranda. An apparatus is disclosed. The door apparatus has a frame in which a horizontal member is installed by a fastening bracket between the vertical members so that an entrance and exit is formed therein, and forms a frame. Upper and lower fixing brackets are installed at the upper and lower ends of the vertical member to fix the vertical member to the ceiling and the bottom of the veranda, respectively. The lower fixing bracket is provided with a balance adjusting member for adjusting the balance of the frame. At the entrance of the frame, a fixing member provided in the vertical member and at least one hinge device installed at each side thereof are coupled to each other so that the door can be opened and closed. The assembled door device of the multipurpose room configured as described above simply assembles each part manufactured to a certain standard according to the characteristics of the veranda by simply adjusting the balance of the frame according to the state of the ceiling and the floor of the veranda, thereby making the door device quick and easy. Can be installed.

Description

Assembling door unit for multipurpose room {ASSEMBLY DOOR APPARATUS OF A MULTIPURPOSE ROOM}

The present invention relates to a prefabricated door device of a multipurpose room, and more particularly, a door device manufactured according to a specific standard in a multipurpose room provided to store household consumables or cleaning tools on a veranda of an apartment or multi-family house through a simple assembly process. By installing, the construction is quick and easy to shorten the installation time, and relates to a prefabricated door device of the utility room that can easily adjust the imbalance of the frame according to the state of the ceiling and the floor of the veranda.

In general, the multi-purpose room used in the veranda of the apartment or multi-family house is used to store household items that are not frequently used, or to store cleaning tools.

An entrance for providing a passage is formed on the front of the utility room, and a pair of opening / closing doors are installed to be opened and closed at the entrance.

FIG. 8 schematically shows an installation state of a door apparatus according to the prior art, and FIG. 9 is a plan sectional view of the door apparatus shown in FIG.

As shown in FIGS. 8 and 9, in the conventional door apparatus, at least one horizontal member 120 is disposed between the vertical member 110 and the vertical member 110 which are spaced apart from each other at a predetermined interval and placed upright. Each side of the vertical member 110 by the hinge device 132 so as to open and close the frame 100, the frame 100, the door 102 of the frame 100 is formed so that the doorway 102 is formed therein It is composed of a pair of doors 130 are respectively installed on the viewing surface.

When the door device configured as described above is installed on the front of the multipurpose room, the vertical members 110, which have been cut into pieces of a certain length, are spaced apart from each other at regular intervals to be fixed to the ceiling 150 and the floor 152 in an upright state. The horizontal member 120 is formed by cutting a piece of wood to a predetermined length in the upper and lower portions between the vertical members 110 to form the doorway 102 in the interior of the frame 100, and then each side of the door 130. At least one hinge device 132 is installed on the inner surface of the vertical member 110 facing each other to install a door device on the front of the multipurpose room.

After the door device is installed in the multipurpose room, the finishing plate 140 is installed using the fixing bracket 142 so that the space between the frame 100 and the wall 154 is neatly finished.

However, the door apparatus according to the prior art as described above, the installation time due to the hassle of the work to cut the vertical member and the horizontal member to the standard size according to the size of the entrance formed in the frame to install in the versatile room This takes a long time, there was a problem that the door does not open and close smoothly due to the imbalance of the frame when the state of the ceiling and the bottom surface of the veranda is not uniform.

The present invention has been devised to solve the problems of the prior art as described above, the technical problem of the present invention is to manufacture a door device in accordance with the characteristics of the multi-purpose room provided on the veranda of the apartment or multi-family house, the construction is quick And it can be made easily, and to provide a means for easily adjusting the imbalance of the frame by the state of the ceiling and the bottom surface of the veranda.

The present invention for solving the technical problem as described above, the first side consisting of a receiving groove protruding to face each other at the inlet of the receiving groove and at least one fixing member is accommodated in the longitudinal direction on the inner side facing each other; On the outer surface of the installation portion is formed and symmetrical to each other, the vertical member is formed in the upright state formed by the fitting end is formed so that both ends are bent so as to face each other, disposed between the vertical member and the outer surface symmetrical to each other A frame having a second member having the same shape as that of the first installation portion, the horizontal member being installed to be movable in the longitudinal direction of the vertical member by a fastening bracket coupled to both ends; Upper and lower fixing brackets respectively installed at upper and lower ends of the vertical member to fix the vertical member to the ceiling and the bottom surface; A balance adjusting member provided on the lower fixing bracket of the vertical member to adjust the balance of the frame; And a pair of doors coupled to each other by a fixing member accommodated in the receiving groove of the vertical member and at least one hinge device installed at each side thereof to open and close the door. 2. .

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The prefabricated door device of the utility room according to the present invention having such a feature temporarily fixes the frame to the ceiling and the bottom surface through upper and lower fixing brackets installed on the upper and lower vertical members of the frame forming the door so that the entrance is formed therein. Fixed to the ceiling and the floor by adjusting the balance of the frame with the balance adjusting member provided on the lower fixing bracket, and installing the door to be opened and closed at the entrance of the frame, thereby opening the door to the utility room provided in the apartment or the veranda. When installing the device, the construction is quick and easy by simple assembly process of each standardized part, and the unbalance of the frame caused by the unevenness of the ceiling and the floor of the veranda can be easily adjusted using the balance adjusting member. have.

Hereinafter, with reference to the accompanying drawings, the assembled door device of the multipurpose room according to a preferred embodiment of the present invention will be described in detail.

1 is an exploded perspective view of a door device according to a first preferred embodiment of the present invention, FIG. 2 is a front view of a coupled state of the door device shown in FIG. 1, and FIG. 3 is an AA line of FIG. 2. A cross-sectional view is shown, and FIG. 4 shows an enlarged cross-sectional view of the main line BB of FIG. 3.

1 to 4, the prefabricated door device according to the first embodiment of the present invention is a horizontal member through the fastening bracket 18 between the vertical member 12 so that the doorway 19 is formed therein ( 16 is installed and formed on the upper and lower ends of the frame 10 and the vertical member 12, respectively, to form a frame, and fix the upper and lower parts to fix the vertical member 12 to the ceiling 60 and the bottom surface 62. Brackets 20 and 22, the lower fixing bracket 22 is provided with a vertical adjusting member (30) for adjusting the balance of the frame 10, at least one hinge device 42 provided on each side ( It is installed in 12) includes a pair of doors 40 for opening and closing the doorway 19 of the frame (10).

The frame 10 forms a frame such that the doorway 19 is formed on the front of the utility room. The frame 10 is horizontally installed between the vertical members 12 and the vertical members 12 that are spaced apart from each other at a predetermined interval. The member 16 is provided.

The vertical members 12 having a predetermined length are spaced apart from each other at regular intervals and are disposed in an upright position between the ceiling 60 and the bottom surface 62 of the utility room. On the inner surfaces of the vertical members 12 facing each other, the locking projection 13b is formed to protrude so as to face each other at the inlet of the receiving groove 13a and the receiving groove 13a in which the fixing member 15 can be accommodated in the longitudinal direction. The first installation part 13 made of) is formed. At least one screw hole 15a penetrates the fixing member 15 so as to be mutually coupled with the hinge device 42 installed in the door 40. On the symmetrical outer surfaces of the vertical members 12, both ends are bent so as to face each other to form a fitting portion 14 in which the locking end 14a is formed. At one end selected from the locking ends 14a formed at both ends of the outer surface of the vertical members 12, the wing 14b for installing the finishing plate 50 is formed to protrude. The wing 14b is preferably formed at the locking end 14a positioned in front of the vertical members 12.

Horizontal members 16 having a predetermined length are provided on the upper and lower portions of the vertical members 12, respectively. On the outer surfaces of the horizontal members 16 which are symmetrical to each other, the second mounting portion 17 including the receiving groove 17a and the locking jaw 17b to have the same shape as the first mounting portion 13 of the vertical member 12. Is formed. The horizontal member 16 may be installed only on the upper portion of the vertical member 12.

The fastening bracket 18 is for coupling the horizontal member 16 to the vertical member 12, and the fastening bracket 18 is bent at right sides with respect to the center thereof so that at least one screw hole 18a is provided at both sides. Each of the guide parts 18b having the same width as the inlet of the accommodation groove 13a of the first installation part 13 is formed in each of the central parts so as to be movable in the longitudinal direction of the vertical member 12.

When the vertical member 12 and the horizontal member 16 are coupled to each other by the fastening bracket 18, one side of the fastening bracket 18 accommodates the second installation part 17 at both ends of the horizontal member 16. It is fixed to the horizontal member 16 such that the bolt 18c is inserted into the groove 17a so that the fastening and loosening of the screw hole 18a is freely screwed to the locking jaw 17b of the accommodation groove 17a. The other side of the fastening bracket 18 is inserted into the receiving groove 13a of the first installation part 13 and is accommodated by the bolt 18c which is freely screwed into the screw hole 18a. It is fixed to the vertical member 12 so as to be in close contact / spaced to the locking step (13b) of). At this time, the fastening bracket 18 is screwed to the other side of the fastening bracket 18 because the guide portion 18b formed in the center portion is formed to have the same width as the entrance of the receiving groove 13a of the first installation portion 13. When the bolt 18c is released, the horizontal member 16 may move in the longitudinal direction of the vertical member 12.

On the other hand, the upper and lower fixing brackets 20 and 22 are for fixing the vertical member 12 disposed on the front of the multipurpose room to the ceiling 60 and the bottom surface 62, the upper fixing bracket 20 ) Is formed by bending both sides at right angles to the center, at least one screw hole (20a) is formed on one side of the bent. One side of the upper fixing bracket 20 is inserted and fixed to the fitting portion 14 formed on the upper end of the vertical member 12, the other side is in close contact with the ceiling 60 is fixed by the anchor bolt (20c).

Here, when the upper fixing bracket 20 is fixed to the fitting portion 14 formed on the upper end of the vertical member 12, the upper fixing bracket 20 is one side of the vertical hole 12 is formed with a screw hole (20a) Inserted into the portion 14, it is fixed so as to be in close contact / spaced to the locking end (14a) of the fitting portion 14 by a bolt (20b) that is tightened and loosened to the screw hole (20a) freely.

Like the upper fixing bracket 20, the lower fixing bracket 22 is formed by being bent at right sides with respect to the center, and at least one screw hole 22a is formed on one side of the bent side, and the bottom surface 62 on the other side. The protrusion 24 is formed to protrude to the upper side so that the lower portion in contact with the opening is opened to form the receiving space 23 therein. An upper surface of the protruding portion 24 is formed with a through hole 24a penetrating through the accommodation space 23. One side of the lower fixing bracket 22 is inserted into and fixed to the fitting portion 14 formed at the bottom of the vertical member 12, and the other side is fixed to the bottom surface 62 to be fixed by the anchor bolt 26.

Here, when the lower fixing bracket 22 is fixed to the fitting portion 14 formed at the lower end of the vertical member 12, the lower fixing bracket 22 is one side of the vertical hole 12 is formed with a screw hole (22a) It is inserted into the portion 14, it is fixed so that one side is in close contact / spaced to the locking end (14a) of the fitting portion 14 by the bolt (22b) that is fastened and loosened to the screw hole (22a).

On the other hand, the balance adjusting member 30 is to adjust the balance of the frame 10 installed on the front of the multipurpose room, the balance adjusting member 30 is a nut member 32, a nut member provided with a screw hole (32a) The screw member 34 is screwed into the screw hole 32a of the 32 and protrudes into the receiving space 23 through the through hole 24a, and is installed to prevent separation from the end of the screw member 34. A close contact with the bottom surface 62 in accordance with the rotation of the 34 includes a close contact member 36 for adjusting the balance of the frame (10).

The nut member 32 is provided with a threaded hole 32a corresponding to the through hole 24a and is fixedly installed to communicate with the through hole 24a and the screw hole 32a on the upper surface of the protrusion 24.

The screw member 34 is screwed into the screw hole 32a of the nut member 32 to protrude into the receiving space 23 through the through hole 24a of the protrusion 24.

The close contact member 36 is installed to prevent separation from the end of the screw member 34 protruding into the receiving space 23, the screw member that can be adjusted so that the balance of the frame 10 installed in the front of the multipurpose room is balanced ( It is in close contact with the bottom surface 62 in accordance with the rotation of 34. The close contact member 36 is movable to the screw member 34 so as to be in close contact with the bottom surface 62, depending on the state of the ceiling 60 and the bottom surface 62, for example, uniform or non-uniform. Is installed.

The balance adjusting member 30 is in close contact with the bottom member 62 is the close contact member 36 in accordance with the rotation of the screw member 34, thereby the frame 10 temporarily fixed to the ceiling 60 is flowed Since the bottom surface 62 is not uniform, the imbalance of the frame 10 generated may be easily adjusted.

On the other hand, the door 40 is to open and close the doorway 19 formed in the frame 10, the door 40 is configured in a pair is installed on each side so that the doorway 19 can be opened and closed. At least one hinge device 42 is provided on each of the vertical members 12 facing each other. The opening and closing of the door 40 by the hinge device 42 is a well-known technical idea, and a detailed description of the configuration and operation of the hinge device 42 will be omitted. In the hinge device 42, fitting holes 43a are formed at positions corresponding to the screw holes 15a of the fixing member 15 accommodated in the receiving groove 13a of the first installation part 13, respectively.

The door 40 configured as described above is fastened to the screw hole 15a of the fixing member 15 received through the fitting hole 43a of the hinge device 42 and received in the receiving groove 13a of the first installation part 13. As the fixing member 15 is tightly attached to the locking step 13b as the bolt 43b is loosely screwed freely, it is installed on the vertical member 12.

Thus, the door 40 installed in the vertical member 12 can open and close the doorway 19 of the frame 10 by the hinge device 42.

Referring to the installation process of the assembled door device of the multipurpose room according to a preferred embodiment of the present invention configured as described above in detail.

When the door device according to the preferred embodiment of the present invention is to be installed on the front of the multipurpose room, as shown in FIGS. 5 and 6, one side of the fastening bracket 18 bent at right angles to both sides of the center part is a horizontal member ( 16 is inserted into the receiving grooves 17a of the second mounting portion 17 at both ends, and the bolts 18c are tightened to the screw holes 18a formed on one side of the fastening bracket 18 to fasten the bracket 18. One side of the fixed to the horizontal member 16 so as to be in close contact with the locking step (17b) of the receiving groove (17a). When the bolt 18c is loosened in the opposite direction of the tightening, one side of the fastening bracket 18 in close contact with the locking jaw 17b of the accommodation groove 17a is spaced apart from the locking jaw 17b and thus becomes detachable.

When one side of the fastening brackets 18 are fixed to and coupled to both ends of the horizontal member 16, the first mounting part 13 is disposed at an upper portion of the vertical member 12 which is spaced apart from each other at a predetermined interval. Insert the other side of the fastening bracket 18 coupled to both ends of the horizontal member 16 into the receiving groove (13a) formed in each, and move the fastening bracket 18 in the longitudinal direction of the vertical member 12 to the vertical member ( Position the horizontal member 16 at the bottom of the 12). At this time, the horizontal member 16 is the vertical member 12 because the guide portion 18b formed at the center of the fastening bracket 18 is formed to have the same width as the entrance of the receiving groove 17a of the first installation portion 17. It is possible to move in the longitudinal direction.

When the horizontal member 16 is positioned below the vertical members 12, the bolt 18c is tightened to the screw hole 18a formed at the other side of the fastening bracket 18 so that the other side of the fastening bracket 18 is accommodated. Fix it so as to be in close contact with the locking step (13b) of (13a). When the bolt 18c is loosened in the opposite direction of tightening, the other side of the fastening bracket 18 in close contact with the locking jaw 13b of the accommodation groove 13a is spaced apart from the locking jaw 13b, thereby being in a detachable state.

When the horizontal member 16 is fixed to the lower portion of the vertical member 12, a plurality of fixing members 15 are respectively inserted into the receiving grooves 13a formed in the first installation part 13 of the vertical member 12. According to the same process as described above to form a doorway 19 in the interior of the frame 10 to form a frame by fixing the horizontal member 16 in the upper portion between the vertical member (12). At this time, the first mounting portion 13 of the vertical member 12 is located on the inner surface to face each other, the second mounting portion 17 of the horizontal member 16 is located on the outer surface symmetrical to each other.

When the frame 10 is completed such that the vertical member 12 and the horizontal member 16 are coupled to each other to form a doorway 19 to be formed therein, the fitting portion 14 formed at the top of the vertical member 12 is formed. Insert one side of the upper fixing bracket 20 bent at right angles to each other, and tighten the bolt 20b to the screw hole (20a) formed on one side of the upper fixing bracket 20, one side of the upper fixing bracket (20) It is fixed to the vertical member 12 so as to be in close contact with the locking end 14a of the fitting portion 14. When the bolt 20b is loosened in the opposite direction of tightening, one side of the upper fixing bracket 20 in close contact with the locking end 14a of the fitting portion 14 is spaced apart from the locking end 14b and thus becomes detachable.

One side of the lower fixing bracket 22 is inserted into and fixed to the fitting portion 14 formed at the lower end of the vertical member 12 through the same process as described above.

Subsequently, when the upper and lower fixing brackets 20 and 22 are coupled to the upper and lower ends of the vertical member 12, the frame 10 is positioned on the front of the multipurpose room, and the other side of the upper fixing bracket 20 is anchored to each other. It is fixed to the ceiling 60 by using (20c).

And by adjusting the balance adjusting member 30 provided in the lower fixing bracket 22 coupled to the lower end of the vertical member 12, the frame according to the ceiling 60 and the bottom surface 62 is uniform or non-uniform Balance 10.

That is, when the state of the ceiling 60 and the bottom surface 62 is not uniform and it is not necessary to balance the frame 10, the upper fixing bracket 20 temporarily fixed to the ceiling 60 is anchored to the anchor bolt 20c. ) To be completely fixed to the ceiling 60, and the lower fixing bracket 22 is also completely fixed to the bottom surface 62 using the anchor bolt 26, like the upper fixing bracket 20.

On the contrary, when the state of the ceiling 60 and the bottom surface 62 is not uniform and the frame 10 needs to be balanced, a separate measuring gauge is provided on the horizontal member 16 positioned below the vertical member 12. Rotates the screw member 34 provided on the protruding portion 24 formed on the other side of the lower fixing bracket 22 in a raised state. Then, the screw member 34 is moved up and down along the screw hole 32a of the nut member 32 fixed to the protruding portion 24, and at the end of the screw member 34 to be accommodated in the receiving space 23. The installed contact member 36 is in close contact with the bottom surface 62 and the frame 10 temporarily fixed to the ceiling 60 flows upward. At this time, while adjusting the gauge to adjust the balance of the frame 10. At this time, the contact member 36 is smoothly adhered to the bottom surface 62 because it is installed to flow in the screw member (34).

When the balance of the frame 10 is balanced through the above process, the upper fixing bracket 20 temporarily fixed to the ceiling 60 is tightened to the ceiling 60 by tightening the anchor bolt 20c, and the lower fixing bracket Similarly to the upper fixing bracket 20, 22 is completely fixed to the bottom surface 62 using an anchor bolt 26.

If the frame 10 is fixed to the ceiling 60 and the bottom surface 62 in a balanced state, the penetrating holes 43a of the hinge device 42 provided on each side of the door 40 may be penetrated. Fastening bolts 43b to the screw holes 15a of the fixing members 15 accommodated in the receiving grooves 13a of the first mounting portion 13 so that the fixing members 15 are formed in the receiving grooves 13a. It is fixed to the vertical member 12 to be in close contact with 13b). Through the above process, the plurality of hinge devices 42 and the plurality of fixing members 15 accommodated in the receiving groove 13a are coupled to each other by bolts 43b so that the door 40 is formed of the vertical member 12. 1 is to be installed in the mounting portion (13). When the bolts 43b are loosened in the opposite direction of the tightening, the fixing member 15 in close contact with the latching jaw 13b of the accommodation groove 13a is spaced apart from the latching jaw 13b and thus becomes a detachable state.

Subsequently, when the door 40 is installed to be opened and closed at the doorway 19 of the frame 10 and the installation of the door device is completed, the space between the frame 10 and the wall 64 is formed using the finishing plate 50. Finish cleanly.

That is, one side of the finishing plate 50 is fixed to the wing portion 14b of the vertical member 12 by a known coupling means, for example, bolts, etc., and the other side of the wall of the utility room using the fixing bracket 52 64).

Thus, the assembled door device of the utility room in the present embodiment can be easily assembled by bolts of each component manufactured to a certain standard, even if the bottom state of the veranda is not uniform, the balance provided in the lower fixing bracket 22 By using the adjusting member 30 is to be easily adjusted so that the balance of the frame 10 is balanced.

Figure 7 is an enlarged plan view of the main portion of the door apparatus according to a second embodiment of the present invention.

Referring to Figure 7 describes a door device according to a second embodiment of the present invention as follows.

Referring to Figure 7, the prefabricated door device according to a second embodiment of the present invention is a horizontal member 16 through the fastening bracket 18 between the vertical member 12 so that the doorway 19 is formed therein Upper and lower fixing brackets 20 are installed at upper and lower ends of the frame 10 and the vertical member 12 to form the frame, respectively, to fix the vertical member 12 to the ceiling 60 and the bottom surface 62. 22, a balance adjusting member 30 provided at the lower fixing bracket 22 to adjust the balance of the frame 10, and at least one hinge device 42 installed at each side to the vertical member 12. It is provided with a pair of doors 40 for opening and closing the doorway 19 of the frame 10.

However, the door device according to the second embodiment of the present invention has the following differences in the structure of the door device according to the first embodiment.

That is, at least one spacing rib 14c is formed on the front surface of the wing portion 14b formed in the vertical member 12 to form an equal interval.

The configuration other than the structure of the door device according to the second preferred embodiment of the present invention configured as described above is the same as the door device according to the first preferred embodiment of the present invention.

When the door device according to the second embodiment of the present invention configured as described above is installed in the vertical member 12, the door 40, the hinge device 42 is installed, the hinge device 42 and the door 40 is coupled Due to the characteristics of the space between the vertical member 12 and the door 40 is generated about 3mm, in this state, the space between the frame 10 and the wall 64 is neatly finished to the wing portion 14b When the finishing plate 50 having the same thickness as the door 40 is fixed to the door 40, a step is generated between the door 40 and the finishing plate 50 due to the distance between the vertical member 12 and the door 40. Beautifulness is reduced.

Therefore, when the gap rib 14c is projected about 3 mm on the front surface of the wing portion 14b to fix the closing plate 50 to the wing portion 14b, the vertical member 12 and the door are separated by the gap rib 14c. The interval generated between 40 is compensated for.

As described above, the assembled door device of the utility room according to the present embodiment has a step generated between the door 40 and the closing plate 50 according to the gap generated between the vertical member 12 and the door 40. By compensating through the gap rib (14c) formed in the), the beauty of the appearance is improved.

As described above, the prefabricated door device of the utility room according to the present invention is manufactured by simply assembling each part to a certain standard so as to meet the characteristics of the utility room provided in the veranda of an apartment or multi-family house, so that construction is quick and easy. It is made to shorten the installation time, it is to provide an effect that can be easily adjusted through the balance control member the imbalance of the frame caused by the non-uniform ceiling and floor of the veranda.

Although the present invention has been described as an embodiment, the present invention is not limited to the above-described embodiment, and the general knowledge in the field to which the present invention belongs without departing from the gist of the present invention claimed in the utility model registration claims. Anyone with a variety of variations will be possible.

1 is an exploded perspective view of a door device according to a first embodiment of the present invention;

Figure 2 is a front view of the engaged state of the door device shown in FIG.

3 is a cross-sectional view taken along the line A-A of FIG.

4 is an enlarged cross-sectional view of the main portion B-B of FIG.

5 is a front view showing an installation state of the door device according to the present invention,

6 is a plan sectional view of the door device shown in FIG. 5;

7 is an enlarged plan view of a main portion of a door device according to a second embodiment of the present invention;

8 is a front view schematically showing an installation state of a door apparatus according to the prior art, and

9 is a plan sectional view of the door apparatus shown in FIG.

<Explanation of Signs of Major Parts of Drawings>

10 frame 12 vertical member

13: 1st installation part 15: fixing member

16: horizontal member 17: second mounting portion

20,22: upper and lower fixing bracket 30: balance adjusting member

40: door 42: hinge device

50: finishing plate 60: ceiling

62: floor 64: wall

Claims (8)

The inner surface facing each other is formed with a receiving groove for receiving at least one fixing member in the longitudinal direction and a first mounting portion consisting of a locking jaw protruding to face each other at the inlet of the receiving groove and both ends are symmetrical to each other. Vertical members are formed in the upright part is formed with a locking end that is bent to face each other, a second mounting portion having the same shape as the first mounting portion is formed on the outer surface provided between the vertical members and symmetrical with each other between the vertical members A frame made of a horizontal member which is installed to be movable in the longitudinal direction of the vertical member by a fastening bracket coupled to both ends; Upper and lower fixing brackets respectively installed at upper and lower ends of the vertical member to fix the vertical member to the ceiling and the bottom surface; A balance adjusting member provided on the lower fixing bracket of the vertical member to adjust the balance of the frame; And And a pair of doors coupled to each other by a fixing member accommodated in the receiving groove of the vertical member and at least one hinge device installed at each side thereof to open and close the door. 2. The method of claim 1, wherein the fastening bracket is bent at right sides with respect to the center portion at least one side each formed at least one or more screw holes, the central portion is formed with a guide having the same width as the inlet of the receiving groove of the first installation portion When the vertical member and the horizontal member are coupled to each other, one side of the fastening bracket is inserted into the receiving groove of the second installation part to be in close contact with the latching jaw of the receiving groove by a bolt screwed to the screw hole. It is fixed to the member, the other side of the fastening bracket is inserted into the receiving groove of the first installation portion to the vertical member so as to be in close contact / spaced to the locking step of the receiving groove by a bolt that is tightened and loosened to the screw hole freely Prefabricated door device of the utility room, characterized in that the movable movable. The upper and lower fixing brackets are formed at both sides of the upper and lower fixing brackets at right angles with respect to the center portion, and one side of the screw hole is fixed to the fitting portion of the vertical member, and the other side is fixed to the ceiling and the bottom surface, respectively. When one side of the upper and lower fixing brackets are respectively fixed to the fitting portion of the vertical member, one side of the upper and lower fixing brackets is respectively inserted into the fitting portions formed at the upper and lower portions of the vertical member, and fastened to the screw hole. Prefabricated door device of the utility room, characterized in that the fastening and loosening is fixed to be in close contact / spaced to the locking end of the fitting portion by a bolt that is freely screwed. The protruding portion of any one of claims 1 to 3, wherein the balance adjusting member has a lower portion contacting the bottom surface on the other side of the lower fixing bracket so that the through hole is formed on the upper surface thereof so that an accommodation space is formed therein. Form, A nut member provided with a screw hole communicating with the through hole and fixed to an upper surface of the protrusion; A screw member screwed to the screw hole of the nut member and protruding into the receiving space of the lower fixing bracket through the through hole; And And a close contact member installed at the end of the screw member protruding into the accommodation space to prevent detachment, and a close contact member contacting the bottom surface to adjust the balance of the frame according to the rotation of the screw member. Prefabricated door units. The prefabricated door apparatus of claim 4, wherein the close contact member is installed to be movable on the screw member to be in close contact with the bottom surface. The method of claim 4, wherein a pair of screw holes are formed in the fixing member, a pair of fitting holes are formed in a position corresponding to the screw holes of the fixing member, and the fixing member and the hinge device are coupled to each other. In this case, the bolt penetrating the fitting hole of the hinge device is screwed and loosened to the screw hole of the fixing member is freely screwed so that the fixing member is coupled so as to contact / spaced close to the locking jaw of the first installation portion Prefabricated door device for utility room. The prefabricated door apparatus of claim 1, wherein a wing portion for installing the finishing plate is protruded from one end of the locking end formed at both ends of the outer surface of the vertical member. The prefabricated door apparatus of claim 7, wherein a front surface of the wing part is formed to protrude a gap rib for compensating for a step generated between the door and the closing plate.