KR101351217B1 - Soundproofing panel - Google Patents

Abstract

The present invention relates to a soundproof panel and, more specifically, to a soundproof panel which is provided to reduce production costs by manufacturing front and rear side plates to have an identical shape, to prevent an upper plate from being deflected or crushed due to load applied to the upper side plate when the rear side plate is inserted into the front side plate and the upper side plates of the front and rear side plates are attached to each other for becoming a dual layer and placed on top of each other, and to form a soundproof material mounting part on the front and rear sides of a support frame disposed inside the front side plate for installing a soundproof material, which is installed inside the sound proof panel according to the conditions of a construction site, on either the front side plate or the rear side plate, or both sides of the front and rear side plates. The soundproof panel comprises: a structure in which the rear side plate is inserted inside the front side plate; multiple supporting frames disposed inside the rear side plate; a soundproof mounting unit formed inside the support frame for selectively installing the soundproof material on the front and rear sides of the support frame; and side plates combined with the both sides of the front and rear side plates; and can reduce maintenance costs and remove frequent and troubling repair works caused by the upper plate deflected and crushed by the load which is generated by dually attaching the upper and lower plates of the front side plate to the upper and lower plates of the rear side plate.

Description

Soundproofing Panel {Soundproofing panel}

The present invention relates to a soundproof plate, and more particularly, to reduce the cost of the product by manufacturing the front plate and the back plate in the same shape, the top plate of the front plate and the top plate of the back plate is double layered as the back plate is inserted into the inside of the front plate To prevent the top plate from sagging or crushing due to the load acting on the top plate when the sound insulation board is laminated, and the sound-absorbing material seating part is formed on the front and rear of the support frame installed inside the back plate according to the conditions of the work site. It relates to a sound insulation panel which can be installed on either of the front panel and the rear panel, or the sound-absorbing material to be installed inside the soundproof panel selectively, or both sides.

In general, sound barriers are installed at the edges of roads in order to reduce noise and create a pleasant road environment in noisy places such as railways, airfields, and roads. .

The soundproof plate is a sound-absorbing material made of glass wool or polyester inside is inserted into the inside, and consists of the front plate and the back plate as a whole, and the side frame is coupled to the side to form a rectangular frame guide post A plurality of sound insulation plates are inserted into the (H beam) in a stacked manner to reduce external noise.

The soundproof plate is combined with the upper cover and the lower cover, respectively, on the upper and lower portions of the rear plate to seal the rear, and the side plate is coupled to both sides, the sound absorbing material is installed inside, the front plate is installed on the front of the side plate to the outside noise It is introduced into the sound absorbing hole formed in the front plate to achieve a structure in which noise is reduced by the sound absorbing material.

In the case of the conventional pre-registered Utility Model Registration No. 20-0458337 soundproof plate is inserted into the inside of the H-beam laminated type, when the soundproof plate and the soundproof plate is laminated, the upper cover is crushed due to the load acting on the top cover of the soundproof plate. Due to the sound absorbing material is also a problem that the deflection phenomenon occurs, and the coupling structure of the sound insulation plate is complicated, the productivity is low, there is a problem that the cost of the product increases.

On the other hand, when the soundproof plate is used for a long time, the sound absorbing performance of the sound absorbing material formed inside the soundproof panel is degraded, while the phenomenon of the sound absorbing material sag occurs, the upper portion of the sound absorbing material sags to the rear side, and the middle part of the sound absorbing material is damaged by the sound absorbing material fixing part. There is this.

In the process of maintaining the sound insulation board, the sound insulation board is not the same structure, it takes a lot of work time to disassemble and assemble the sound insulation board, and the overall work process is delayed, causing a lot of troublesome work.

Since the soundproof plate of the conventional soundproof plate is different in the shape of the front and rear, the sound absorbing material installed in the interior of the soundproof panel is always in close contact with the front plate while maintaining the sound absorbing material to be integrally formed on the rear plate, and the soundproof plate Since the shape of the front and the back are different, the troublesome to be careful not to reverse the direction of the sound insulation panel during installation work, and in particular, if it is necessary to install the sound absorbing material on the rear panel, there is a problem that can not be achieved with conventional sound insulation panels have.

In order to solve the conventional problems, the registered utility model No. 20-0313145 double-sided sound-absorbing soundproof plate is used, but in the case of a double-sided sound-absorbing soundproof plate should always be installed on both sides, there is a problem that the manufacturing cost and the cost of the product increases.

Moreover, separate upper and lower frames are installed on the upper and lower sides of the double-sided sound absorbing soundproof panel. In the case of the upper and lower frames, the upper frame is damaged due to the intensive load acting on the upper frame in the process of stacking the soundproof panels, and the upper frame. As the crushed or damaged, the sound absorbing material is also broken together, there is a problem that excessive maintenance costs.

Since the structure of the conventional double-sided sound absorbing soundproof plate always has a structure in which the sound absorbing material is installed on both sides, it is inconvenient that the sound absorbing material can not be installed and used in any one of the front panel and the rear panel as needed, and separate for installing the sound absorbing material on both sides. There is a problem in that the cost of the product is increased because the structure of.

KR 20-0458337 E01B

The present invention is to solve the above problems, the object of the present invention is to produce the front plate and the back plate in the same shape of the sound absorbing material installed in the soundproof plate according to the conditions of the work site of the front plate and the back plate It can be installed on either side or on both sides, and the top plate is inserted by the back plate inside the front plate so that the top plate of the front plate and the back plate can be closely adhered in two layers. It is to provide a sound insulation board that can prevent the sagging or crushing in advance.

Another object of the present invention is the support frame is installed to be spaced apart at a predetermined interval inside the rear plate, the upper support and the lower support of the support frame to more firmly support the top plate and the bottom plate to extend the life of the soundproof plate at the same time maintenance of the soundproof plate It is to provide a sound insulation board to reduce the cost.

Another object of the present invention is that the back plate is inserted into the inside of the front plate while being firmly fixed integrally with the front plate to prevent the phenomenon that the front plate is distorted even in the strong wind acting on the front plate, Since space is left behind the support frame inserted inside the front panel, if the vehicle collides with the front panel, the front panel and sound absorbing material are pushed to the rear of the support frame to provide a soundproof panel that can alleviate the impact of the vehicle. will be.

Another object of the present invention is to improve the overall structure so as to minimize the number of parts of the soundproof panel to reduce the cost of the soundproof panel by improving the productivity of the product by simplifying the manufacturing and installation process, the support frame is installed inside the soundproof panel The sound-absorbing material seating part is formed in the front and rear of the front panel so that the sound-absorbing material installed in the soundproofing panel can be selectively installed on either the front panel or the rear panel according to the conditions of the work site, or can be installed on both sides. When the sound absorbing material is installed in the sound absorbing material seat located in the sound absorbing material and sound waves introduced into the sound absorbing hole of the front panel, the sound absorbing material seat part, which is emptied between the front panel and the support frame, is partially absorbed by the sound absorbing material. It is to provide a sound insulation board.

Still another object of the present invention is to provide an auxiliary support unit integrally formed on the circumferential surface of the upper support unit and the lower support unit of the support frame and having an auxiliary support unit integrally formed on both sides of the support unit while separately provided with a plate-shaped support frame. It is to provide a soundproof plate to reduce the cost of the support frame by improving the structure to bend the auxiliary support and the inside.

In order to achieve the object of the present invention as described above, the soundproof plate according to the present invention is the front plate is coupled to the front of the rear plate, the sound absorbing material is inserted into the inside of the rear plate, the side surface on both sides of the front plate and the back plate In the soundproof plate to which the plate is coupled, the upper plate and the lower plate are formed on the upper and lower portions of the front plate and the rear plate so that the front plate and the rear plate have the same shape, and the front plate and the rear plate are sealed by inserting the rear plate inside the front plate. The upper plate and the lower plate is in close contact with each other, a plurality of sound absorbing holes are formed in the inside of the front plate and the back plate, a plurality of support frames are installed in the inside of the front plate, the support frame is between the upper support and the lower support The struts are integrally formed at the top to firmly support the upper plate and the lower plate, and sound absorbing material seating portions are formed at the front and rear of the struts, so Is installed in one place any part of the sound absorbing material mounted on the rear, characterized in that formed is characterized in that the side plates are bonded to both sides of the front plate and the back plate.

In the soundproof plate of the present invention, the top plate and the top plate of the front / rear plate are doubled while the rear plate is inserted into the inside of the front plate so as to prevent the top plate from sagging or crushing due to the load acting on the top plate of the soundproof plate when laminated to the H beam. It is characterized in that the upper plate and the lower plate to be more firmly supported by the upper support portion and the lower support portion of the support frame is installed inside the front plate while overlapping with.

According to the present invention as described above, while improving the structure so that the sound absorbing material can be selectively installed on the front and rear of the support frame installed inside while manufacturing the front plate and the back plate in the same shape of the soundproof plate according to the conditions of the work site The effect that can be freely changed in the installation direction of the sound absorbing material to be installed inside, and the back plate is inserted into the inside of the front panel by inserting the top plate of the back plate in close contact with the bottom of the top plate of the front panel to the top plate when the sound insulation panel is laminated There is an effect that can prevent the top plate from sagging or crushed by the applied load.

The present invention forms an upper support and a lower support in the upper and lower portions of the support frame installed inside the rear plate to support the top and bottom of the front and rear plates more firmly to prevent damage to the soundproof plate in advance, while maintaining maintenance costs. It is effective to reduce the cost.

The present invention is installed so that the upper plate and the lower plate of the front plate to surround the outer side of the rear plate, even in the strong wind acting on the front plate, the front plate is not crushed or damaged and maintained firmly installed by the cushioning action, By leaving a space for installing sound absorber seats on the front and rear of the support frame installed in the middle part, the front panel and sound absorber are pushed to the empty sound absorber seats to alleviate the impact of the vehicle even when the vehicle collides with the front panel. There is one effect.

The present invention has the effect of reducing the cost of the soundproof panel by minimizing the number of parts to simplify the overall assembly and installation work, and the sound-absorbing material seating portion formed in the front and rear of the support frame installed in the soundproof panel according to the conditions of the work site The soundproof panel installed in the first row allows the sound absorbing material to be installed in the front plate, and the soundproofing panel laminated in the second row allows the sound absorbing material to be installed in the rear plate, thereby maximizing the noise reduction efficiency of the soundproof panel in the neighborhood of the apartment in the city center.

When the sound absorbing material is installed in any one of the sound absorbing material seating portion located on the front and rear of the support frame, the sound absorbing material seating portion of the other side is vacant while the sound absorbing material flowing into the sound absorbing hole and the fine sound waves are empty, , Part is absorbed by the sound absorbing material has an effect that can further improve the sound absorbing efficiency.

The present invention improves the structure so that the support frame made of a plate can be installed in a folding manner to further reduce the cost of the product, and the support frame for supporting the sound absorbing material when the vehicle collides with the front plate is produced in the plate shape It is distorted in the direction of the rear panel has the effect of mitigating the impact of the vehicle as much as possible.

1 is a perspective view showing a separated state of the sound insulation plate of the present invention.
Figure 2 is a cross-sectional view showing a bonding state of the sound insulation plate of the present invention.
Figure 3 is an exploded perspective view showing another embodiment of the sound insulation plate of the present invention.
Fig. 4 is a sectional view of Fig. 3; Fig.
5 is an exploded view of the support frame of the present invention.
Figure 6 is an exploded view of the side plate of the present invention.
Figure 7 is a sectional view showing another embodiment of the sound insulation plate of the present invention.

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

1 to 7, the sound insulation plate of the present invention has a structure in which the back plate 11 is inserted into the front plate 10, and a plurality of support frames 20 are provided inside the back plate 11. Is installed, the sound absorbing material seating portion 24 is formed on the inside of the support frame 20 to selectively install the sound absorbing material 25 on the front and rear of the support frame 20, the front plate 10 and the rear The side plate 30 is configured to couple to both sides of the plate 11.

The front plate 10 and the rear plate 11 of the soundproof panel laminated inside the H-beam are manufactured in the same shape so that there is no boundary between the front and rear surfaces, so that the assembly and installation of the soundproof panel can be quickly performed. The upper part of the upper plate 10 and the rear plate 11, the upper plate (10a) (11a) is extended to the front end is bent downward, the inside of the front plate 10, the rear plate 11 is fitted Inserted into the upper plate 10a of the front plate 10, the upper plate 11a of the rear plate 11 is firmly in close contact with the double to act on the top plate (10a) (11a) in the process of laminating the soundproof plate The upper plate (10a) (11a) is sag or crushed by the load can be eliminated the hassle of having to perform the replacement of the soundproof plate, the lower plate (10b) in the lower portion of the front plate (10) and the rear plate (11) A bottom plate 11b of the back plate 11 pushes the bottom surface of the front plate 10 and the back plate 11. The end portion is bent upwards to be closed so as to be closed and firmly adhered to the inner wall surface of the front plate 10, and the lower plate 10b of the front plate 10 is the lower plate 11b of the rear plate 11. ) Keep bent upwards to be in close contact with the bottom.

A plurality of sound absorbing holes 12 are formed on inner surfaces of the front plate 10 and the back plate 11 to reduce noise and sound waves, and the top plate 10a of the front plate 10 and the back plate 11. ) 11a and the lower plate 10b and 11b are convexly curved to the top and the lower plate 10b so as to maintain a more tightly adhered state in the process of stacking up and down. 11b has a structure in which grooves are formed concave inwards, and both the front and rear surfaces and the upper and lower portions of the soundproof plate are sealed while the rear plate 11 is inserted into the front plate 10. The front plate 10 is fixed so that the top plate 10a surrounds the outer side of the top plate 11a and the back plate 11 of the back plate 11 so that the front plate 10 may be strongly blown on the front plate 10. ) Can be elastically fixed without being crushed or damaged.

The plurality of support frames 20 installed inside the rear plate 11 further secure the upper plate 10a, 11a and the lower plate 10b, 11b of the front plate 10 and the rear plate 11. The upper support part 21 and the lower support part 22 are formed in the upper part and the lower part so that it may be fixed so that it may be in close contact with the inside of the upper board 11a and the lower board 11b of the back plate 11, and the said upper support part 21 The support 23 is integrally formed between the lower support 22 and the rear support 11, and is installed on the left and right sides of the back plate 11 at regular intervals, and the upper support 21 and the upper support 21. The lower support part 22 protrudes to both sides to be in close contact with the inner wall surface of the rear plate 11, and the support frame 20 is formed in an “I” shape to absorb sound 25 at the front and rear of the support 23. ) So that the sound absorbing material mounting portion 24 may be selectively installed so that the sound absorbing material 25 may be closely adhered to the front plate 10 or the rear plate 11 according to the conditions of the work site. There are in, or can be installed on both sides of both features.

The support 23 of the support frame 20 is characterized in that the sound absorbing material 25 can be selectively installed on the front and rear, and the support 23 is firmly in close contact with the entire rear surface of the sound absorbing material 25, the sound absorbing material 25 The phenomenon of flowing or sagging can be prevented beforehand.

The side plate 30 installed on both side surfaces of the front plate 10 and the rear plate 11 is manufactured in the same shape as the front plate 10 and the rear plate 11 are coupled, and the side plate Both side surfaces of the plate 30 protrude outward from the side wing portions 31 so that the side wing portions 31 are inserted into the rear plate 11 and fixed with bolts or rivets.

Figure 3 is a perspective view showing another embodiment of the soundproof plate of the present invention, the coupling structure of the front plate 10 and the back plate 11 of the present invention is the same as the soundproof plate of Figures 1 and 2, and the description is omitted, the difference The part having the support frame 200 is made of a plate-like, and the auxiliary support portion (210a) (220a) and the auxiliary support (230a) formed integrally to the support frame 200 made of a plate folded to produce In order to reduce the cost of the product while minimizing the volume, the support frame 200 is integrally formed with the support 230 between the upper support 210 and the lower support 220, the upper support ( Peripheral surfaces of the 210 and the lower support part 220, that is, the auxiliary support parts 210a and 220a protruding from the upper and lower sides of the upper support part 210 and the lower and both sides of the lower support part 220, are bent inward to support the frame ( To increase the strength of the upper support 210 and the lower Auxiliary support portions 210a and 220a that are bent at both sides of the branch 220 maintain the state in close contact with the inner wall surface of the rear plate 11 and protrude on both sides of the support 230 to be bent inwardly. The auxiliary support 230a supports the rear of the sound absorbing material 250, and the sound absorbing material seating part 240 is formed on the front and rear of the support 230 to install various sound absorbing materials 250 according to the conditions of the work site. Can be used.

On the other hand, the side plate 300 coupled to both sides of the front plate 10 and the back plate 11 has side wing portions 310 protruding on both sides are bent outward to the inside of the back plate 11. When firmly fixed with a bolt or rivet, the upper and lower wing portions 320 are formed on the upper and lower portions of the side plate 300 and bent inward to form the upper plate 11a and the lower plate 11b of the rear plate 11. It can be maintained firmly fixed to the inside of the).

Soundproof plate according to the present invention configured as described above is operated as follows.

In the case of the internal circulation path located in the city center, the sound absorbing material 25 is installed in the soundproofing boards because most of the high-rise buildings and apartments are installed, and the shape of the soundproofing boards is different from the front and the rear. Since the soundproof plate provided with the sound absorbing material 25 on the front plate 10 can be changed unconditionally, since the top cover located on the upper part of the soundproof plate is separately coupled in the process of stacking the conventional soundproof plate on the H beam. There was a problem in that the maintenance work is often carried out due to sag or crushing without overloading the upper cover, and the maintenance cost is excessive. However, the soundproof plate of the present invention is the front plate 10. The upper plate of the rear plate 11 on the bottom of the upper plate (10a) of the front plate (10) is inserted into the rear plate 11 is inserted into the inside of the ( 11a) is overlapped and overlapped in duplicate so that the upper plate 10a, 11a and the lower plate 10b, 11b are prevented from sagging or crushing when the sound insulation board is laminated. The upper and lower support portions 21, 210, 22, and 220 of the support frames 20 and 200 installed inside the 11 are more firmly attached to the upper and lower plates 10a, 11a and 10b, 11b which are in close contact with each other. It has the feature to extend the lifespan of the sound insulation board.

Soundproof plate of the present invention can be installed by applying a variety of sound-absorbing materials (25, 250) according to the conditions of the work site, when the soundproof plate is installed on the highway or inner circulation located in the center of the soundproof plate front plate 10 and the rear plate ( Even if the direction of the installation is changed to 11, the sound insulation plate can be laminated, and in the case of particularly high noise, the sound absorbing material 25 installed in the sound absorbing material seating portions 24 and 240 of the support frames 20 and 200 ( When the rear panel 250 is installed on the rear surface, the noise and sound waves introduced into the sound absorbing hole 12 of the front plate 10 are vacant spaces of the sound absorbing material mounting parts 24 and 240 located in front of the support frames 20 and 200. While moving along a part is naturally attenuated, and part is absorbed by the sound absorbing material (25) 250 located in the rear plate 11 is improved the sound absorption efficiency.

In the soundproof plate of the present invention, for example, when the soundproof plate stacked on the H beam is 1 to 5 rows, the sound absorbing materials 25 and 250 installed in one row are the sound absorbing materials 25 installed in two rows on the rear surface of the front plate 10. 250 is a sound absorbing material (25) installed in three rows on the back plate 11 is characterized in that the noise can be reduced to the maximum by repeatedly applying the operation to be installed on the back of the front plate 10 again, In the conventional soundproofing plate, the shape of the front and rear surfaces is different, so that the direction of the soundproofing plate has to be kept constant at all times, but the front plate 10 and the rear plate 11 of the present invention are installed in the direction and the sound absorbing material 25. ) 250 has a feature that can be carried out by varying the installation position.

The soundproof plate of the present invention is characterized in that the sound absorbing materials 25 and 250 may be installed on both sides according to the working conditions, so that the soundproof plate may be manufactured at a lower cost than the production cost of the specially manufactured double-sided soundproof plate, and the vehicle may face the front plate 10. And the front plate 10 and the sound absorbing materials 25 and 250 are pushed into the space of the sound absorbing material seating portions 24 and 240 emptied in the rear of the support frames 20 and 200 even when colliding with the impact. There are also features to mitigate as much as possible.

7 is a cross-sectional view showing another embodiment of the sound insulation panel of the present invention, wherein the upper plate 10a, 11a and lower plate 10b, 11b of the front plate 10 and the rear plate 11 of the present invention protrude upward. The upper support portion 210 and the lower support portion 220 of the support frame 20 inserted into the rear plate 11 while being configured to have an inclination angle so as to be stacked with each other, also the upper plate 11a of the rear plate 11 ) And the lower plate 11b may be formed and used to have the same structure.

The top plate (10a) (11a) and the bottom plate (10b) (11b) of the front plate 10 and the rear plate 11 of the present invention can be manufactured in a variety of shapes, while having a structure in which the soundproof plate is laminated to each other Sound absorbing material (25) (250) has a feature that can be used to apply to both the front and rear or both sides.

The soundproof plate according to the present invention described above is not limited to the above embodiments, and any person having ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention claimed in the following claims. The technical spirit is to the extent that it can be changed and implemented.

10: Front panel 11: Back panel
10a, 11a: upper plate 10b, 11b: lower plate
12: sound absorbing hole 20,200: support frame
21,210: upper support 22,220: lower support
23,230: Shoring 24,240: Sound absorbing material seat
25,250: Sound absorbing material 210a, 220a: Auxiliary support
230a: auxiliary pillar 30,300: side plate
31,310: Side wing 320: Upper and lower wing

Claims (7)

In the soundproof plate that the front plate is coupled to the front of the back plate, the sound absorbing material is inserted into the inside of the back plate, the side plate is coupled to both sides of the front plate and the back plate,
Upper plate 10a, 11a and lower plate 10b, 11b are formed on the upper and lower portions of the front plate 10 and the rear plate 11 so that the front plate 10 and the back plate 11 have the same shape. And, the back plate 11 is inserted into the inside of the front plate 10 and the front and rear are sealed, the upper plate (10a) (11a) and the lower plate (10b) (11b) is in close contact with the double, the front plate ( 10 and a plurality of sound absorbing holes 12 are formed in the inside of the back plate 11, a plurality of support frame 20 is installed in the inside of the front plate 10, the support frame 20 is the upper A support 23 is integrally formed between the support 21 and the lower support 22 to firmly support the upper plate 10a, 11a and the lower plate 10b, 11b, and the front surface of the support 23. Sound absorbing material seating portion 24 is formed on the rear and the sound absorbing material 25 is installed in any one of the sound absorbing material seating portion 24 located on the front or rear of the support, the amount of the front plate 10 and the back plate 11 With side plates 30 coupled to the sides Sound insulation board according to claim. According to claim 1, wherein the top plate (10a) (11a) of the front plate 10 and the back plate 11 is extended to the front end is bent downward, the front plate 10 and the back plate 11 Lower plate (10b) (11b) of the bent end to the upper portion, the lower plate (11b) of the rear plate 11 is the front plate 10 to seal the bottom surface of the front plate 10 and the rear plate (11) Extended to the end portion is bent upwards and in close contact with the inner wall surface of the front plate 10, the lower plate 10b of the front plate 10 is bent inclined so as to be in close contact with the bottom surface of the lower plate 11b of the rear plate (11). Soundproof plate characterized in that. According to claim 1, wherein the support frame 20 is formed in the overall "I" shape, the upper support portion 21 and the lower support portion 22 of the support frame 20 is the front / rear plate 10, 11 Firmly supports the upper plate (10a) (11a) and the lower plate (10b) (11b), both sides of the upper support portion 21 and the lower support portion 22 to both sides to be in close contact with the inside of the front plate (10) Protruding, the support frame 20 is installed to be spaced apart a predetermined interval inside the front plate 10, the back of the sound absorbing material 25 is in close contact with the support 23 of the support frame 20, the sound absorbing material 25 Soundproof plate, characterized in that not to move. The sound insulation board according to claim 1, wherein the side plate (30) has side wing parts (31) formed on both sides to seal both sides of the front plate (10) and the back plate (11). In the soundproof plate that the front plate is coupled to the front of the back plate, the sound absorbing material is inserted into the inside of the back plate, the side plate is coupled to both sides of the front plate and the back plate,
Upper plate 10a, 11a and lower plate 10b, 11b are formed on the upper and lower portions of the front plate 10 and the rear plate 11 so that the front plate 10 and the back plate 11 have the same shape. And, the back plate 11 is inserted into the inside of the front plate 10 and the front and rear are sealed, the upper plate (10a) (11a) and the lower plate (10b) (11b) is in close contact with the double, the front plate ( 10) and a plurality of sound absorbing holes 12 are formed in the inside of the back plate 11, a plurality of support frame 200 is installed in the inside of the front plate 10, the support frame 200 is the upper The support 230 is integrally formed between the support part 210 and the lower support part 220, and the auxiliary support parts 210a and 220a are integrally formed on the upper support part 210 and the lower support part 220, respectively. The upper plate (10a) (11a) and the lower plate (10b) (11b) is firmly supported by bending to form a secondary support (230a) integrally formed on both sides of the support (230) and bent inward, the support Secondary and 230 Sound absorbing material seating portion 240 is formed on the front and rear of the 230a so that the sound absorbing material 250 is installed on any one of the sound absorbing material seating portion 240 located in the front or rear of the support, the front plate 10 and the back plate The side plate 300 is coupled to both sides of the side 11 to seal the inside, and side wings 310 are bent outwardly on both sides of the side plate 300 so that the front plate 10 and the rear plate ( Soundproof plate, which is in close contact with the inner wall of the 11, the upper and lower wing portion 320 is formed on the upper and lower portions of the side plate 300 to be in close contact with the inner side of the rear plate (11). According to claim 5, wherein the top plate (10a) (11a) of the front plate 10 and the back plate 11 is extended to the front end is bent downward, the front plate 10 and the back plate (11) Lower plate (10b) (11b) of the bent end to the upper portion, the lower plate (11b) of the rear plate 11 is the front plate 10 to seal the bottom surface of the front plate 10 and the rear plate (11) Soundproof plate, characterized in that the end portion is bent to the upper end, the lower plate (10b) of the front plate (10) is bent inclined in close contact with the bottom surface of the lower plate (11b) of the rear plate (11). According to claim 5, The support frame 200 is made of an "I" shape as a whole, the auxiliary support (210a) formed on the upper and lower portions of the upper support portion 210 and the lower support portion 220 of the support frame 200 ( 220a is bent inward to firmly support the upper plate 10a, 11a and the lower plate 10b, 11b of the front and rear plates 10, 11, and the upper support 210 and the lower support 220 The auxiliary support parts 210a and 220a formed on both sides of the bent inward to be in close contact with the inside of the front plate 10, and the auxiliary support parts 230a formed on both sides of the support part 230 to be bent inward. Soundproof plate, characterized in that the rear of the sound absorbing material (250) in close contact.

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