KR20140004493U - Signboard - Google Patents

Abstract

The signboard of the present invention includes an extrusion frame including a front portion, an upper surface portion, a bottom portion, and a coupling portion, a side frame coupled to both ends of the extrusion frame, and a bracket coupled to the extrusion frame to fix the signboard to the wall.
According to the sign of the present invention, it is possible to manufacture a lightweight and durable extrusion frame, which can reduce the overall weight of the signboard, and can produce a signboard that is easy to assemble and disassemble.

Description

Signboard {Signboard}

The present invention relates to a prefabricated signboard, more specifically, a main frame of a signboard is formed by extrusion and injection, thereby simplifying the installation process, reducing the work time and reducing the installation cost, It is easy to manufacture, can be mass-produced, has excellent ornamental qualities to match the building as it is made to look beautiful, and it is possible to combine various kinds of signboard members to differentiate them so that they can function as signboards in various forms Quot;

In order to draw the attention of a passerby around a shop, a company or an institution, a signboard is used as a cover for the outer wall of the building, indicating the items to be handled, goods to be handled, Lt; / RTI >

These types of signboards are widely known, but they are generally divided into two types: vertical installation on the ground and exterior installation on the building. Such a signboard for advertisement is constituted to support a portion displayed by the advertisement text and this portion in at least one or more frames. Most of the signboard currently applied is a simple rectangular shape, and a color sheet or the like is provided on the surface of the signboard panel In order to maximize the advertisement effect as well as easy identification at night, the advertising surface is made of a translucent plate such as acrylic, and an illuminating device such as a fluorescent lamp or LED is mounted on the inside to emit light .

There are various types of signboards, such as extruded signboards, rooftop signboards, signboards, and advertising stands. Among them, a protruding signboard hanging around the outer wall of a building or an entrance of a store is most commonly used. Accordingly, the protruding signboards described above include a cross-sectional signboard whose upper surface is fixed to the wall surface and the upper surface of the store entrance, and the front and rear surfaces are used as advertisement surfaces, Sided signboard whose side is fixed to the wall.

Korean Patent Laid-Open No. 10-2008-0101053 (November 21, 2008)

The conventional protruding signboard is constructed so that a square frame is manufactured in advance before being installed in a building and then the advertising sign is placed on the anchor of the building in a state where the advertisement text is described. There has been a problem in that it needs to be re-manufactured and installed in order to change the contents. In addition, even if the contents of the signboard are left intact, it is impossible for the consumer to arbitrarily change the background in which the advertisement text is described. Therefore, even if the user wishes to change the signboard background, the signboard must be removed from the building wall to reinstall the new signboard. There is a problem that the increase, the installation cost, and the manufacturing cost are increased, and the installation work is not easy.

Furthermore, due to frequent replacement of such signboards, the anchor on the wall of the building must be constantly constructed according to the size of the signboard, resulting in damage to the outer wall of the building, and a fundamental There was a problem.

In addition, the frame of the conventional signboard is mostly made of iron plate, bent, welded, and painted according to its size. That is, the conventional signboard has a problem in that the signboard can be manufactured only when a certain level of technology is required because the material is heavy and the process of manufacturing is troublesome. Therefore, time and expense are excessively spent at the time of making a signboard, and it is difficult to manufacture a signboard of a size and a use desired by a user at a small signboard factory.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a prefabricated signboard in which a signboard installed on an outer wall of a building is constructed in a prefabricated manner and is easy to manufacture and install, There is a purpose.

In order to attain the above object, the signboard of the present invention includes an extrusion frame which forms an external shape of a signboard, a side frame coupled to both ends of the extrusion frame, and a bracket coupled with the extrusion frame.

The extrusion frame includes a front portion formed in the longitudinal direction of the extrusion frame, a top portion formed in the longitudinal direction of the extrusion frame and connected to one longitudinal end of the front portion, perpendicular to the front portion, A bottom portion formed in the longitudinal direction of the extrusion frame and connected to the other longitudinal end of the extrusion frame, a first portion formed perpendicularly to the other end of the top portion in a direction away from the front portion, A coupling portion; And a second engaging portion protruding vertically from the other end of the lower surface portion toward the other end of the upper surface portion so as to be spaced apart from the front surface portion. The front portion and the bottom portion have insertion grooves formed at both ends thereof. The front portion includes a front plate positioned on the outer side of the extrusion frame and a front inner plate positioned on the inner side of the extrusion frame and spaced apart from the front plate and connected to the front plate by a plurality of partition walls. The upper surface portion includes an upper surface plate positioned on the outer side of the extrusion frame and an upper surface inner plate positioned on the inner side of the extrusion frame and spaced apart from the upper surface plate and connected to the front plate by a plurality of partitions. The lower surface of the bottom plate is located on the outer side of the extrusion frame and the lower inner plate is located on the inner side of the extrusion frame and is spaced apart from the front plate and connected to the front plate by a plurality of partitions. The first engaging portion and the second engaging portion each have an engaging surface located on the outer side of the extrusion frame, an engaging inner surface disposed on the inner side of the extrusion frame and spaced apart from the front plate, And a coupling surface and a coupling surface connected to the coupling inner surface. The engaging groove is formed by a square through hole.

The side frame includes a plurality of protrusions formed in a rectangular shape and protruding in a strip shape from the side surface of the side plate and protruding vertically from the side plate.

The bracket includes a horizontal portion formed with a plurality of bolt holes, a vertical portion formed vertically protruding from both ends of the horizontal portion, and a fixing portion formed at an end portion of the vertical portion. The length of the outer side of both sides of the vertical part is equal to or less than the length of the connecting surface of the first engaging part and the connecting part of the second engaging part and when the bracket and the extrusion frame are engaged, And the outer surface of the bracket is flush with the engaging surface of the first engaging portion and the engaging surface of the second engaging portion or protrudes outside the extrusion frame. The protrusions are formed in a vertical plane with a predetermined thickness, and the square holes formed by the vertical surfaces are gradually reduced as the protrusions are protruded. When the side frames and the extrusion frame are engaged, the protrusions are inserted and fixed in the insertion grooves The rim is located along an edge of the extrusion frame. The fixing portion of the bracket includes a first horizontal surface formed at an end of the vertical portion, a first inclined surface formed to be inclined, and a second inclined surface formed to be inclined from a second horizontal surface formed vertically at a portion of the outer surface of the vertical portion. The first inclined surface and the second inclined surface are connected to each other. The bolt hole of the bracket includes a first bolt hole formed of a through hole vertically formed in the horizontal direction and a second bolt hole formed apart from the first bolt hole and having a larger through hole area than the first bolt hole. It is possible to change the joining position of the bolt coupled to the second bolt hole after joining the bolt to the first bolt hole. The bolt hole of the bracket comprises a through hole formed perpendicularly to the horizontal hole, and includes a plurality of third bolt holes for coupling the bracket and the outer wall by a nail.

The present invention has the effect that the construction of the signboard installed on the outer wall of the building is constructed in a prefabricated manner, and the installation work is easy, thereby reducing the construction installation cost.

According to the present invention, it is possible to mass-produce signboards at low cost through plastic extrusion molding, to reduce the weight of signboards, and to produce signboards that are solid and free from rusting. In addition, anyone can easily assemble signboards, which saves installation and installation time, thereby reducing labor costs.

According to the present invention, it is possible to provide a variety of signboard members that can be attached to a signboard, and thus it is possible to diversify signboard members such as letters, designs, advertisement texts, patterns, stereoscopic channel letters, The advertising contents and the background can be changed by changing only the signboard member without changing the entire frame signboard at the time of changing the advertising contents and the background of the signboard.

1 is an installation view of a signboard according to the present invention.
2 is an exploded perspective view of a signboard according to the present invention.
Fig. 3 is an assembled sectional view of another signboard according to the present invention; Fig.
4A and 4B are sectional views of the extrusion frame according to the present invention.
5A is a perspective view of a side frame according to the present invention.
5B is a side view of the side frame according to the present invention.
6A is a perspective view of the bracket according to the present invention.
6B is a front view of the bracket according to the present invention.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: FIG. In the description of the present invention, if a detailed description of known techniques related to the present invention is deemed unnecessary, the detailed description will be omitted. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to denote the same or similar elements.

1 is an installation view of a signboard according to the present invention.

The signboard 1 according to the present invention is generally provided on an outer wall of a building and provides a space for installing the signboard member 2, which is a three-dimensional object in the form of characters or figures. Generally, the signboard has a rectangular shape with a long front face, and the signboard of the present invention also has a rectangular front face portion 11 and extends in the longitudinal direction of the signboard. Generally, the signboard member 2 is made of plastic in three dimensions, or can be made of a sticker or the like and attached to the front face of the signboard 1. Further, if a light source such as an LED is installed in the inside of the sign board 2, the advertising effect can be expected at night.

Fig. 2 is an exploded perspective view of a signboard according to the present invention, and Fig. 3 is a joint sectional view of another signboard according to the present invention.

The signboard 10 according to the present invention includes an extrusion frame 10, a side frame 2, and a bracket 30.

4A and 4B are sectional views of the extrusion frame according to the present invention.

The extrusion frame 10 corresponds to a main frame which forms an external shape of a signboard. The extrusion frame 10 includes a front portion 11 to which the signboard member 2 can be attached on the outside of the front plate 11a, a top face portion 12 extending vertically from the front portion, And engaging portions 14 and 15 vertically formed at the other side ends of the upper surface portion 12 and the lower surface portion 13.

Most of the configurations of the signboard disclosed in the present invention have a rectangular shape. When one edge of the rectangle is referred to as one end, the edge at the position corresponding to the one end is referred to as the other end, and both corners connecting the one end and the other end are referred to as one end and the other end, respectively.

The front portion 11 has a long shape in the longitudinal direction of the extrusion frame 10.

The upper surface portion 12 is plate-shaped and has one end connected to one end of the front portion 11 and projecting perpendicularly to the front portion 11. The lower surface portion 13 is formed at the other end of the front surface portion 11 so as to be positioned in correspondence with the upper surface portion 12. The lower surface portion 13 is also vertically coupled to the front surface portion 11 at one end thereof in the same manner as the upper surface portion 12. The cross section of the front face portion 11, the upper face portion 12 and the lower face portion 13 has a "C" shape. The engaging portions 14 and 15 are formed so as to protrude vertically from the other side ends of the upper surface portion 12 and the lower surface portion 13, respectively.

The front part 11 includes a front plate 11a formed on the outer side of the extrusion frame 10 and a front inner plate 11b positioned on the inner side of the extrusion frame 10 and spaced apart from the front plate 11a . The front plate 11a and the front inner plate 11b are connected by a plurality of partition walls 11c. The plurality of partition walls 11c are located at regular intervals and the through holes formed by the partition wall 11c, the front plate 11a and the front inner plate 11b have a square shape.

The upper surface portion 12 includes a top plate 12a located outside the extrusion frame 10 and an upper surface inner plate 12b located inside the extrusion frame and spaced apart from the top plate 12a. The upper surface plate 12a and the upper surface inner plate 12b are connected by a plurality of partition walls 12c. The plurality of partition walls 12c are arranged at regular intervals and the through holes formed by the partition walls 12c, the upper face plate 12a and the lower face inner plate 12b have a square shape.

Referring to FIG. 4A, the bottom surface portion 13 is formed to be symmetrical with the top surface portion 12.

The square through holes formed in the upper face portion 12 and the lower face portion 13 may have the same size as the square through holes formed in the front face portion 11, This is to increase the size of the insertion groove 16 into which the projecting portion 23 can be smoothly engaged.

The through holes located at the opposite ends (one end and the other end) of the through holes formed in the upper surface portion 12 and the lower surface portion 13 are called insertion grooves 16a to 16d.

As shown in FIG. 4A, the engaging portions 14 and 15 are formed so as to protrude vertically from the other side surfaces of the upper surface portion 12 and the lower surface portion 13. The engaging portions 14 and 15 include engaging surfaces 14a and 15a, engaging inner surfaces 14b and 15b and connecting surfaces 14d and 15d and may further include barrier ribs 14c and 15c. The protruding lengths of the engaging portions 14 and 15 are constantly limited for engagement with the bracket 30. The two engaging portions 14 and 15 are referred to as a first engaging portion 14 and a second engaging portion 15, respectively.

The extrusion frame 10 is made of a plastic material by extrusion processing. Therefore, the extrusion frame 10 is in the form of a column having a constant cross section and can be manufactured continuously. Such extrusion processing makes it possible to manufacture extrusion frames 10 having various lengths. That is, it is possible to manufacture the signboard 1 having various lengths. Plastic materials are advantageous for further processing. Therefore, when the LED light source is installed inside the sign board member 2, a through hole may be formed in the front face portion 11 of the extrusion frame 10 so that the LED wiring can pass through. Since the through-hole can be covered with the signboard member 2, it is possible to manufacture a signboard having a beautiful appearance.

Each of the configurations of the extrusion frame 10 is preferably a plate-shaped plate having a constant thickness. However, for the durability of the extrusion frame 10, the front plate 11a, the top plate 12a, the bottom plate 13a, and other structures that constitute the exoskeleton of the extrusion frame 10 have partition walls 11c and 12c , 13c, 14c, and 15c. The number of the partition walls 11c, 12c, 13c, 14c, and 15c located in the interior is not limited to the embodiment of the present invention, but may be formed in various numbers. The partition walls located inside the front part 11, the top surface part 12 and the bottom part 13 are preferably formed such that the through holes are located in a square shape.

Due to the above-described shape, it is possible to manufacture the extrusion frame 10 having high durability and light weight.

A plurality of protrusions 17 may be formed on the front surface portion 11 of the extrusion frame 10 as shown in FIG. It is preferable that the plurality of projections 17 are formed along the longitudinal direction of the extrusion frame 10 with a certain distance therebetween. It is expected that a plurality of protrusions 17 are formed in the extrusion frame 10 to increase the esthetics for increasing the advertising effect. The plurality of projections 17 may be semicircular, triangular and rectangular in cross section, but preferably square for an aesthetic function. In addition, there is an advantage that the sign board member 2 can be easily coupled between the plurality of projections 17. [ Since the extrusion frame 10 is manufactured by extrusion, it is efficient that the plurality of projections 17 are integrally formed with the extrusion frame 10. [

FIG. 5A is a perspective view of the side frame 20 according to the present invention, and FIG. 5B is a side view of the side frame 20 according to the present invention.

The side frames 20 are joined to both ends of the compression frame 10. When the side frame 20 is coupled to the compression frame 10, it is possible to prevent the upper surface portion 12 and the lower surface portion 13 from being separated or widened by hysteresis. That is, the side frame 20 prevents the hollow extrusion frame 10 from being twisted or bent.

The side frame 20 includes a side plate 21 in the shape of a rectangular plate and a frame 22 protruding continuously in the form of a strip along the periphery of the side plate 21. The side frame 21 is located inside the frame 22, And a plurality of protrusions 23 protruding perpendicularly from the protrusions.

When the side frame 20 is coupled to the extrusion frame 10, the side plate 21 prevents the through hole of the extrusion frame 10 from being exposed to the outside. The rim 22 is located on the outer periphery of the extrusion frame and prevents contaminants such as water from entering the extrusion frame 10.

The projecting portion 23 has a shape to be inserted into the insertion groove 16. Therefore, it is preferable to have the same size as the insertion groove 16. Alternatively, it is also preferable that a portion has the same size, and a portion becomes smaller as it protrudes along the projecting direction. Such a shape having a gradient allows the projecting portion 23 to be easily inserted into the insertion groove 16 and prevents the extrusion frame 10 from being damaged by a large pressure in the forced-fit connection. That is, the protruding portion 23 is formed of a vertical surface having a predetermined thickness, and the rectangular hole formed by the vertical surfaces is preferably smaller as the protruding portion 23 protrudes.

The side frame 20 is preferably made of the same material as the extrusion frame 10. However, it is difficult to manufacture the side frame 20 by an extrusion method, and it is preferable that the side frame 20 is manufactured by an injection molding method.

6A is a perspective view of the bracket 30 according to the present invention, and FIG. 6B is a front view of the bracket 30 according to the present invention.

The bracket 30 includes a horizontal portion 31 formed with a plurality of bolt holes 34, a vertical portion 32 vertically protruding from both ends of the horizontal portion 31, (33).

The horizontal portion 31 includes a first bolt hole 34a and a first bolt hole 34b formed vertically on the plane. The first bolt holes are spaced apart from the central portion of the horizontal portion 31 and formed into a constant circle, and the second bolt hole 34b is formed at a position corresponding to the first bolt hole 34a. It is preferable that the second bolt hole 34b is formed as a through hole having a slightly elongated cross section rather than a circular shape. The bracket 30 is connected to the wall by connecting the bolt to the first bolt hole 34a and the bolt is connected to the wall through the second bolt hole 34b so that the position of the bracket 30 can be easily adjusted, .

The horizontal portion 31 may include a third bolt hole 34c having a smaller through hole size than the first bolt hole 34a and the second bolt hole 34b. The third bolt hole 34c is used for mounting the bracket 30 on wood or iron. That is, the third bolt hole 34c is used for all the walls that can engage the screw. The bracket 30 can be fixed to all of the walls that can be screwed through the third bolt hole.

When the bracket 30 and the extrusion frame 10 are engaged with each other, the vertical portion 32 is formed to be positioned between the first engaging portion 14 and the second engaging portion 15. [ The outer side surfaces of both sides of the vertical portion 32 are brought into contact with the connecting surface 14d of the first engaging portion 14 and the connecting surface 15d of the second engaging portion 15, respectively. The length of the outer side of both sides of the vertical portion 32 is formed to be equal to or smaller than the length of the connecting surface 15d of the second engaging portion 15 and the connecting surface 14d of the first engaging portion 14 . That is, when the extrusion frame 10 and the bracket 30 are coupled, the outer surface of the bracket 30 is engaged with the engagement surface 14a of the first engagement portion 14 and the engagement surface 14b of the second engagement portion 15 15a of the extrusion frame 10 or protrude out of the extrusion frame 10.

The fixing portion 33 includes a first horizontal surface 33a formed at an end of the vertical portion 32 and a first inclined surface 33b formed to be inclined and a second horizontal surface 33b formed vertically at a portion of the outer surface of the vertical portion 32 33d and a second inclined surface 33c formed to be inclined. It is preferable that the first inclined face 33b and the second inclined face are connected to each other and the edge formed by the first inclined face 33b and the second inclined face 33c protrudes outside the fixing portion 33. [

The bracket 30 may be made of plastic material and manufactured by injection molding. The bracket 30 must be able to withstand a strong external force in that it is a fixed member. Therefore, it may be made of a metal material or the like.

Hereinafter, the process of installing the signboard according to the present invention will be described.

The bracket 30 is installed on the outer wall of the building or the like. At this time, the two vertical portions 32 of the bracket 30 are fixed so as to be positioned on the upper side and the lower side, respectively, and the bolts are passed through the first bolt hole 34a located at the upper side, . At this time, since the bracket 30 is rotatable, the bolt is fixed to the wall through the second bolt hole 34a after the bracket 30 is appropriately positioned. At least two brackets (30) are required to install one sign. The brackets 30 are preferably spaced apart from one another so that the signboards can be installed horizontally.

The first engaging portion 14 of the extrusion frame 10 is positioned on the upper side vertical portion 32 of the bracket 30 after the extrusion frame 10 is positioned so that the front portion 11 is positioned on the opposite side of the bracket 30 As shown in Fig. In this state, the upper fixing part 33 is inserted into the extrusion frame 10. The upper surface portion 12 and the lower surface portion 13 are opened by the elastic force of the extrusion frame and the fixing portion 33 positioned at the lower portion of the bracket 30 Enters the extrusion frame (10). At this time, the corner portions formed by the engaging surface 15a and the connecting surface 15d of the lower surface portion 15 move on the first inclined surface 33b of the bracket 30. [ The first inclined face 33b is formed to be inclined with respect to the moving direction of the extrusion frame 10 so that the extrusion frame 10 can be easily coupled to the bracket 30. [

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. But the present invention is not limited thereto.

1 Signboard 2 Signboard member
10 Extrusion frame
11 front part 11a front plate 11b front inner plate 11c partition wall
12 upper surface portion 12a upper surface plate 12b upper surface inner plate 12c partition wall
13 a lower part 13a a lower plate 13b a lower plate 13c a partition wall
14 First coupling portion
14a coupling surface 14b coupling inner surface 14c barrier rib 14d connecting surface
15 second coupling portion
15a coupling surface 15b coupling inner surface 15c barrier rib 15d connecting surface
16 insertion groove
20 side frame 21 side plate 22 rim 23 protrusion
30 Bracket 31 Horizontal part 32 Vertical part 33 Fixing part
33a First horizontal plane 33b First inclined plane 33c Second inclined plane 33d Second horizontal plane
34 bolt hole 34a first bolt hole 34b second bolt hole 34c third joint hole

Claims (11)

A signboard comprising an extrusion frame forming an external form of a signboard, and a side frame coupled to both ends of the extrusion frame,
Wherein the extrusion frame
A front portion formed in the longitudinal direction of the extrusion frame;
A top surface portion connected to one longitudinal end of the front surface portion and perpendicular to the front surface portion, the top surface portion being formed in the longitudinal direction of the extrusion frame;
A lower surface portion connected to the other longitudinal end of the front surface portion so as to correspond to the upper surface portion and perpendicular to the front surface portion and formed in the longitudinal direction of the extrusion frame;
A first engaging portion protruding vertically from the other end of the upper surface portion toward the other end of the lower surface portion so as to be spaced apart from the front portion; And
And a second engaging portion protruding vertically from the other end of the lower surface portion to the other end of the upper surface portion so as to be spaced apart from the front surface portion. The method according to claim 1,
Wherein the front surface portion and the bottom surface portion have insertion grooves formed at both ends thereof. 3. The method of claim 2,
The front-
A front plate located outside the extrusion frame; And
And a front inner plate positioned inside the extrusion frame and spaced apart from the front plate and connected to the front plate by a plurality of partitions,
The top-
An upper plate positioned outside the extrusion frame; And
And an upper surface inner plate positioned inside the extrusion frame and spaced apart from the upper surface plate and connected to the front plate by a plurality of partitions,
The lower-
A bottom plate positioned outside the extrusion frame; And
A lower inner plate positioned inside the extrusion frame and spaced apart from the front plate and connected to the front plate by a plurality of partitions; / RTI >
Wherein the first engaging portion and the second engaging portion respectively have a first engaging portion,
An engaging surface located outside the extrusion frame;
A coupling inner surface which is located inside the extrusion frame and is spaced apart from the front plate and connected to the front plate by a partition wall; And
And a connection surface connected to the coupling surface and the coupling inner surface. The method of claim 3,
Wherein the coupling groove is formed as a square through hole. 5. The method according to any one of claims 1 to 4,
The signboard further comprises a bracket coupled with the extrusion frame,
The bracket
A horizontal portion having a plurality of bolt holes;
A vertical portion protruding vertically from both ends of the horizontal portion; And
A fixing part formed at an end of the vertical part; / RTI >
The length of the outer side of both sides of the vertical part is equal to or less than the length of the connecting surface of the first engaging part and the connecting part of the second engaging part and when the bracket and the extrusion frame are engaged, And the outer surface of the bracket has the same plane as the engaging surface of the first engaging portion and the engaging surface of the second engaging portion, or protrudes outside the extrusion frame. 6. The method of claim 5,
The side frame includes:
Square plate side plates;
A rim protruding from the side surface of the side plate in a strip shape; And
And a plurality of protrusions positioned inside the rim and protruding perpendicularly to the side plates. The method according to claim 6,
Wherein the protrusion is formed as a vertical surface having a predetermined thickness, and a square hole formed by the vertical surfaces is smaller as the protrusion protrudes,
Wherein the protrusion is inserted and fixed in the insertion groove when the side frame and the extrusion frame are coupled to each other, and the rim is positioned along an edge of the extrusion frame. 8. The method of claim 7,
Wherein the fixing portion of the bracket comprises:
A first inclined surface formed to be inclined with respect to a first horizontal surface formed at an end of the vertical portion; And
And a second inclined surface formed so as to be inclined with respect to a second horizontal surface formed vertically at a part of an outer surface of the vertical portion,
Wherein the first inclined surface and the second inclined surface are connected to each other. 9. The method of claim 8,
Wherein the bolt hole of the bracket
A first bolt hole formed of a through hole vertically formed on the horizontal portion; And
A second bolt hole spaced apart from the first bolt hole and having a larger through hole area than the first bolt hole,
And a joining position of the bolt coupled to the second bolt hole can be changed after the bolt is coupled to the first bolt hole. 9. The method of claim 8,
Wherein the bolt hole of the bracket
And a plurality of third bolt holes made of through holes vertically formed on the horizontal portion and coupling the bracket and the outer wall by screws. 5. The method according to any one of claims 1 to 4,
Wherein the front part further comprises a plurality of protrusions formed at predetermined intervals along the longitudinal direction of the extrusion frame.

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