KR101528310B1 - Soundproof panel and construction method for soundproof wall using that - Google Patents

Abstract

The present invention is to provide a soundproof panel and a method to construct a soundproof wall using the same capable of coupling main bodies and sound absorption members without additional coupling members, manufacturing the main bodies using an extrusion process, and easily constructing soundproof walls. The soundproof panel comprises: a main body having restriction groove parts symmetrically facing each other in the top and the bottom part, a support part to support the restriction groove parts, and stepped parts formed between the restriction groove parts and the support part; sealing members mounted on the stepped parts to be interposed between a plurality of main bodies when the main bodies are piled up; and sound absorption members inserted in the restriction groove parts. The main bodies are formed of an aluminum material and are manufactured by the extrusion process.

Description

TECHNICAL FIELD [0001] The present invention relates to a soundproof panel and a soundproof wall construction method using the soundproof panel.

The present invention relates to a soundproof panel and a soundproof wall construction method using the same, and more particularly, it relates to a soundproof panel which can be combined with a main body and a sound absorbing member without a separate fastening member and can be manufactured by an extrusion process, And a method of constructing a sound barrier using the same.

Generally, roadside and railroad roads are installed with soundproof walls for the purpose of mitigating or preventing noise because they are disturbed by extreme noise.

The soundproof wall has a structure in which a post is installed at regular intervals and a soundproof panel is inserted and fixed between the posts. Most of the structure is similar in shape and shaped, but the shape of the panel is used as a sound absorption type and a reflection type.

Reflective type is a structure in which reflection type irregularities are formed on a surface, which is useful when one side is an open field, and the irregularities on the surface act to shut off the noise inflow of the road in the residential area by reflecting the noise.

The sound absorption type is usually made of metal to form a concave-convex groove on the surface, and a sound absorbing material or the like is filled in the structure to absorb the noise, and is usefully used on the roads between the cities.

Since the sound-absorbing panel actively absorbs and removes the noise, there is an advantage in that the sound insulation effect of the high-rise residential space is higher than the reflection type.

Background Art [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2003-0081252 (published on October 17, 2003, entitled Sound Absorption Panel).

Since the sound-absorbing sound insulation panel according to the related art has a closed space between the front plate and the rear plate, a separate lattice structure is provided on the inner surface of the front plate and the inner surface of the rear plate, Since a separate fastening member is required for assembling the plate and the back plate, it is difficult to reduce the number of parts required for manufacturing the soundproof panel.

Therefore, there is a need for improvement.

The present invention provides a soundproof panel capable of joining a main body and a sound absorbing member without a separate fastening member, making a main body by an extrusion process, and easily performing soundproof wall construction, and a method of constructing a sound barrier wall using the same have.

The present invention relates to a stapler comprising: a main body having a support portion formed with a top end portion and a bottom end portion which are opposed to each other and symmetrically formed with a restricting depressed portion, the depressed depressed portion being formed with a step between the depressed depressed portion and the supporting portion; A sealing member that is seated on the stepped portion so as to be interposed between the main bodies when a plurality of the main bodies are stacked; And a sound absorbing member inserted into the restricting groove portion, wherein the main body includes an aluminum material and is manufactured by an extrusion process.

In addition, the main body is formed with a locking protrusion protruding from the step portion so as to be spaced apart from the main body to press the sealing member of the present invention.

The present invention further includes a cover portion for finishing an end portion of the main body and the sound absorbing member, wherein the cover portion is provided with a curved portion inserted at a distance between the front portion of the main body and the sound absorbing member .

According to the present invention, there is also provided a method of manufacturing a semiconductor device, comprising the steps of: (a) providing a main body having a top portion and a bottom portion which are opposed to each other and have a restricting groove portion formed symmetrically to form a support portion for supporting the constraining groove portion, ≪ / RTI > (b) assembling a soundproof panel by inserting a sound absorbing member into the restricting groove portion and engaging a cover member to cover an end portion of the main body and an end portion of the sound absorbing member; (c) installing a plurality of struts having the installation recessed portions on the ground so as to maintain a space therebetween; (d) inserting the sound insulation panel along the installation recess and laminating a plurality of the sound insulation panels; And (e) providing a pressing portion for bringing the sound insulation panel into close contact with the support, thereby pressing the main body toward the installation groove portion.

In the step (e) of the present invention, it is preferable that the step (e) of the present invention further comprises: a contact pad detachably attached to the strut; a seat panel coupled with the contact pad so as to be disposed adjacent to the strut; Wherein the pushing portion is provided on the support, the pushing portion including a pivoting portion having a press-in portion that is press-fit into the installation groove portion and the main body detachably and capable of being press-fitted into the installation groove portion and the sound- .

Further, the step (e) of the present invention is characterized in that the press-in portion formed with a wide width in comparison with the gap between the installation groove portion and the main body is press-fitted between the installation groove portion and the main body .

Further, after the completion of the step (e) of the present invention, the hinge part including the rotation shaft protruding from the seat panel and the rotation hole part formed in the rotation piece for rotatably inserting the rotation shaft is separated, Wherein the step of separating the panel and the adhesion pad from the support is performed.

A soundproof panel and a method of constructing a soundproof wall using the same according to the present invention are characterized in that a body including an aluminum material is manufactured by an extrusion process and a sound absorbing member and a body are assembled without a separate fastening member, There is an advantage that the time and cost required for manufacturing the soundproof panel are reduced.

Further, the soundproof panel and the soundproof wall construction method using the same according to the present invention are provided with a pressing portion which is installed between a plurality of soundproof panels and presses the connection portion between the soundproof panels toward the inner wall of the installation groove portion of the support, It has an advantage that it can be brought into close contact with the installation groove to improve the noise shielding effect.

Further, the soundproof panel and the soundproof wall construction method using the soundproof panel according to the present invention can separate the seat panel and the adhesive pad after completing the installation of the pressure portion, thereby providing an advantage that the appearance of the soundproof wall can be finely finished.

1 is a perspective view illustrating a soundproof panel according to an embodiment of the present invention.
2 is an exploded perspective view illustrating a soundproof panel according to an embodiment of the present invention.
3 is a cross-sectional view illustrating an installation state of a soundproof panel according to an embodiment of the present invention.
4 is an exploded perspective view illustrating a sound barrier having a soundproof panel according to an embodiment of the present invention.
5 is a perspective view illustrating a pushing portion of a sound barrier having a soundproof panel according to an embodiment of the present invention.
6 is a cross-sectional view illustrating an acoustic barrier having a soundproof panel according to an embodiment of the present invention.

Hereinafter, a soundproof panel according to the present invention and a method of constructing a sound barrier wall using the same will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a perspective view illustrating a soundproof panel according to an embodiment of the present invention, FIG. 2 is an exploded perspective view illustrating a soundproof panel according to an embodiment of the present invention, FIG. 3 is a perspective view illustrating a soundproof panel according to an embodiment of the present invention And the installation state of the soundproof panel is shown in the sectional view.

4 is an exploded perspective view illustrating a soundproof panel having a soundproof panel according to an embodiment of the present invention, FIG. 5 is a perspective view illustrating a pressing portion of the soundproof wall having the soundproof panel according to an embodiment of the present invention And FIG. 6 is a cross-sectional view illustrating a sound barrier having a soundproof panel according to an embodiment of the present invention.

1 to 6, a sound barrier according to an embodiment of the present invention includes a support portion 32b having a constriction groove portion 32a formed to be symmetrical with respect to an upper end portion and a lower end portion and symmetrical to each other and supporting the constriction groove portion 32a, A main body 32 having a stepped portion 32d formed between the retaining groove portion 32a and the support portion 32b so as to be interposed between the main bodies 32 when the plurality of main bodies 32 are stacked, And a sound absorbing member 36a inserted into the restricting groove portion 32a. The main body 32 includes an aluminum material and is manufactured by an extrusion process.

Since the main body 32 of the present embodiment is manufactured by the extrusion process without the connecting portion and the upper and lower fixing groove portions 32a are formed, the sound absorbing members 36a (36a) are formed between the pair of fixing groove portions 32a Can be inserted while being inserted in a sliding manner.

Therefore, the number of components required for manufacturing the soundproof panel 30 can be reduced, and the weight of the soundproof panel 30 can be reduced.

Since the main body 32 is manufactured by the extrusion process, it is possible to easily manufacture a small amount of the main body 32 made of a special standard and to easily manufacture the curved front face portion 36 on the entire surface of the soundproof panel 30 .

The front portion 36 is formed to be curved inwardly in the front direction of the main body 32, and a plurality of holes are continuously formed in the front portion 36.

Since the sound absorbing member 36a is formed with a curved surface portion formed concavely inwardly on its front surface, the sound absorbing member 36a can perform the total reflection and diffraction functions of the noise, and the sound absorbing function can be performed because it includes the polyester material.

A plurality of reinforcing ribs 32c for supporting the back surface of the sound absorbing member 36a are formed on the inner wall of the support portion 32b and a plurality of reinforcing ribs 32c disposed at the center portion of the reinforcing ribs 32c are formed to have the shortest length And the length of the reinforcing ribs 32c is gradually increased toward the upper end and the lower end so that the back surface of the sound absorbing member 36a having a convex center at the rear side can be easily supported.

Therefore, when the sound-absorbing member 36a is inserted into the main body 32, a space is formed between the back surface of the sound-absorbing member 36a and the inner surface of the back surface of the main body 32, .

Since both end portions of the space portion where the air layer is formed are sealed by the cover portion 70, a sealed space is formed between the back surface of the sound absorbing member 36a and the inner surface of the rear surface of the main body 32,

The main body 32 is formed with a locking protrusion 32e protruding from the stepped portion 32d so as to be spaced from the stepped portion 32d.

The restraining groove portion 32a formed at the upper end and the lower end of the main body 32 is formed so as to protrude upward and downward compared with the supporting portion 32b so that a step portion 32d is formed between the restricting recessed portion 32a and the supporting portion 32b. A sealing protrusion 32e is formed on the upper surface of the main body 32 so as to maintain a clearance from the protrusion 32d so that a sealing member 34 is attached to the gap between the protrusion 32d and the protrusion 32e A space that can be press-fitted is formed.

A sealing member 34 is interposed between the main body 32 and the main body 32 when stacking the plurality of main bodies 32 in the vertical direction.

The lower part of the sealing member 34 is pushed into the gap between the stepped part 32d of the main body 32 and the engaging projection 32e and the upper part of the sealing member 34 is disposed on the upper side The lower surface of the support portion 32b of the main body 32 disposed at the upper portion is in close contact with the upper surface of the engagement projection 32e of the main body 32 disposed at the lower side.

The gap between the main body 32 and the main body 32 is closed by the sealing member 34 as described above and the structure of the upper surface and the bottom surface of the main body 32 are formed differently, So that the soundproof panel 30 can be easily installed.

The cover portion 70 is further provided with a front portion 36 of the main body 32 and a sound absorbing portion And a curved portion 74 inserted at an interval between the members 36a.

The cover portion 70 is formed to have a size that can be inserted into both end portions of the main body 32. The cover portion 70 is formed with a bent portion bent in the inward direction of the main body 32, A plurality of fitting groove portions 72 into which the first and second fitting portions 32c are inserted are formed.

Since the curved portion 74 is formed concavely inward in the rim forming the front surface of the cover portion 70, when the cover portion 70 is inserted into the main body 32, the curved portion The back surface of the cover portion 70 is in close contact with the inner wall of the support portion 32b and the reinforcing rib 32c is press-fitted into the fitting groove portion 72 to thereby secure the engagement between the main body 32 and the cover portion 70 .

The soundproof wall having the soundproof panel 30 as described above includes a strut 10 having a plurality of installation slots 12 that are spaced apart from each other and are opposed to each other on the ground and a space between the installation slots 12 A support portion 32b is formed which is opposed to the upper end portion and the lower end portion to be symmetrical with respect to each other and which forms the restricting recessed portion 32a and supports the restricting recessed portion 32a and is provided between the restricting recessed portion 32a and the support portion 32b A sealing member 34 that is seated on the stepped portion 32d so as to be interposed between the main bodies 32 when the plurality of main bodies 32 are stacked, A soundproof panel 30 including a sound absorbing member 36a inserted into the soundproof panel 30 and a cover 70 and a main body 32 being pressed toward the installation groove 12, And a pressing portion 50 for bringing the column 10 into close contact with each other.

When the soundproof wall of this embodiment is installed, a plurality of pillars 10 are installed while maintaining a gap on the road surface, and a sound insulation panel 30 of the present embodiment is slid from the top to the spacing between the pillars 10, The panel 30 is stacked in the vertical direction.

At this time, a sealing member 34 is interposed between the upper surface of the lower soundproof panel 30 and the lower surface of the soundproof panel 30 at the upper part, and the sealing member 34 is interposed between the stepped portion 32d and the engaging protrusion 32e The gap between the soundproof panels 30 is closed to improve the soundproof effect.

After the plurality of soundproof panels 30 are laminated to form the soundproof wall as described above, the main body 32 is pressed inside the installation groove 12 to close the gap between the soundproof panel 30 and the support posts 10 .

The pressing portion 50 of the present embodiment is provided at the connection portion between the plurality of soundproof panels 30 and the pressing portion 50 is provided at a distance between the installation groove portion 12 and the main body 32 by operating the pressing portion 50. [ So that the main body 32 is pressed against the rear surface side of the mounting groove portion 12 and brought into close contact therewith.

The pressing portion 50 of the present embodiment includes a contact pad 54 which is detachably attached to the support 10, a seating panel 52 which is coupled to the contact pad 54 so as to be disposed adjacent to the support 10, And a turning piece 56 rotatably connected to the seating panel 52 and having a press-in portion 56a press-fitted at a distance between the installation groove 12 and the main body 32. [

A fitting hole portion 52a is formed at the center of the seating panel 52 and a narrowed portion is formed at the center of the seating pad 52 so that the fitting hole portion 52a is seated. The connection pad 54 and the seat panel 52 are connected to each other without a separate fastening member.

Since the contact pad 54 is a flexible pad including a synthetic resin material, the contact pad 54 can be deformed into various shapes. The contact pad 54 has a contact portion 54b having a diameter larger than that of the connection portion 54b, 54a.

The connecting portion 54b is narrower in diameter than the contact portion 54a and has a concave shape in the inside direction and a section having a smaller diameter than the connecting portion 54b is formed between the connecting portion 54b and the close contact portion 54a The coupling portion 54b is deformed to be inserted into the coupling hole portion 52a such that the coupling hole portion 52a of the seating panel 52 is disposed in the groove portion between the coupling portion 54b and the close contact portion 54a, The seat panel 52 can be easily coupled.

As described above, when the close contact portion 54a is pressed against the outer wall of the support 10 after the close contact pad 54 and the seat panel 52 are coupled, the close contact portion 54a is deformed close to the plane shape, The adhesion pad 54 and the seating panel 52 are brought into close contact with the outer wall of the column 10 while a vacuum is formed between the column 10 and the outer wall of the column 10.

Thereafter, when the rotation piece 56 is rotated to press-fit the press-in part 56a at a distance between the main body 32 and the installation groove 12, the connection part between the main body 32 and the main body 32 is inserted into the installation groove part 12 toward the rear side.

Since the press-in portion 56a is formed in a wide width as compared with the gap between the installation groove 12 and the main body 32 and the compression hole portion 56b penetrating the press-in portion 56a is formed, The compression hole portion 56b is deformed to press the main body 32 toward the back side of the installation groove portion 12 when the press-fit portion is press-fitted at a distance between the main body 32 and the installation groove portion 12. [

As described above, the gap between the main body 32 and the support posts 10 is closed by the operation of the press-in portion 56a while the main body 32 is in close contact with the installation groove portion 12 and the main body 32 and the main body 32 Is finished by the sealing member 34, the stepped portion 32d and the engaging protrusion 32e, it is possible to effectively prevent the noise from being transmitted to the back side of the soundproof wall.

The seat panel 52 and the rotating piece 56 are rotatably connected by a hinge portion 56c and the rotating shaft constituting the hinge portion 56c is formed on the rotating piece 56 by projecting from the seating panel 52 And is rotatably and slidably inserted into the hole portion.

The seat panel 52 can be detached from the support 10 by separating the rotation shaft and the hole after the rotation piece 56 is press-fitted at a distance between the installation groove 12 and the main body 32, The outer surface of the soundproof wall can be finely finished when the cover 52 and the contact pad 54 are separated from the support 10.

A soundproof panel and a soundproof wall construction method using the same according to an embodiment of the present invention will be described as follows.

The method for constructing a sound barrier wall using a soundproof panel according to an embodiment of the present invention includes a support portion 32b having a constriction groove portion 32a formed to be opposed to and symmetrical to an upper end portion and a lower end portion and supporting the constriction groove portion 32a, A step of manufacturing a main body 32 in which a step portion 32d is formed between the restricting groove portion 32a and the support portion 32b by an extrusion process and a step of inserting the absorbing member 36a into the restricting groove portion 32a, Assembling the soundproof panel 30 by coupling the cover portion 70 to cover the ends of the sound absorbing members 36a and 32a and the ends of the sound absorbing members 36a; A step of laminating a plurality of soundproof panels 30 by inserting a soundproof panel 30 along the installation groove 12 and a step of laminating the soundproof panel 30 and the struts 10 in close contact with each other, , And pressing the main body (10) toward the mounting groove portion (12) side .

First, a main body 32 in which a raw material including an aluminum material is formed by an extrusion process and in which the restraining groove portion 32a and the support portion 32b are integrally formed is manufactured, and a pair of The assembly of the main body 32 and the sound absorbing member 36a is completed by sliding the sound absorbing member 36a from the side direction between the confining groove portions 32a.

Thereafter, a plurality of pillars 10 are formed at regular intervals on the road surface, and the spacing between the pillars 10 and the pillars 10, that is, the spacing between the pillars 12, And a plurality of soundproofing panels 30 are continuously inserted to form a soundproofing wall in which a plurality of soundproofing panels 30 are stacked in a vertical direction.

As described above, the soundproof panel 30 and the soundproof wall of the present embodiment are manufactured by manufacturing the main body 32 by the extrusion process, assembling the sound absorbing member 36a and the main body 32 in a sliding manner, Since the support 10 is assembled in a sliding manner, it is possible to assemble the sound barrier wall without a separate fastening member.

The sealing members 34 are pressed into the spaces between the stepped portions 32d formed on the upper surface of the main body 32 and the engaging protrusions 32e when a plurality of soundproof panels 30 are inserted into the struts 10 and stacked The sound insulating panel 30 is laminated so that the gap between the sound insulating panel 30 and the sound insulating panel 30 is closed by the sealing member 34. [

The step of installing the pressing portion 50 of the present embodiment includes the steps of attaching a pressing pad 54 which is detachably attached to the support 10 and a mounting pad 54 which is engaged with the contact pad 54 so as to be disposed adjacent to the support 10, (56a) rotatably and detachably connected to the seating panel (52) by a hinge portion (56c) and press-fitted at a distance between the installation groove portion (12) and the main body (32) The pushing portion 50 including the turning piece 56 is provided on the support 10 and the press fit portion 56a is press-fitted into the insertion groove 12 and the soundproof panel 30.

The step of installing the pressing portion 50 has a wider width than the interval between the installation groove 12 and the main body 32 and the press-in portion 56a, in which the compression hole portion 56b is formed, (12) and the main body (32).

More specifically, when the seating panel 52 is pressed against the outer wall of the support 10 so as to face the connection portion between the soundproof panel 30 and the soundproof panel 30, the contact portion 54a is spread in a shape similar to a plane The pressing panel portion 52 is pressed against the outer wall of the column 10 and the rotating piece 56 is rotated inside the column 10 so that the press fitting portion 56a is positioned between the soundproof panel 30 and the mounting groove portion 12 Respectively.

At this time, if the rotating piece 56 is struck in the direction of the inside of the mounting groove 12 by using the tool in a state in which the seating panel 52 is in close contact with the stanchion 10, the rotating piece 56 rotates the hinge 56c The press-fit portion 56a is press-fitted into the space between the sound-proof panel 30 and the installation groove 12 while being rotated about the center.

When the press-fit portion 56a is press-fitted into the gap between the panel and the installation groove 12, the width of the compression hole portion 56b is reduced so that the press- The soundproof panel 30 is brought into close contact with the inner wall of the installation groove 12.

Further, after the step of installing the pressing portion 50 is completed, the hinge portion including the rotating shaft projecting from the seating panel 52 and the rotating hole portion formed in the rotating piece 56 such that the rotating shaft is rotatably inserted 56c to separate the seating panel 52 and the contact pads 54 from the pillars 10.

The hinge part 56c rotatably connects the seat panel 52 and the turning piece 56. The seat panel 52 and the turning piece 56 are rotatably and detachably connected by the hinge part 56c do.

Therefore, after the press-in portion 56a is press-fitted between the installation groove 12 and the soundproof panel 30, the seat panel 52 is separated from the support 10 and the seat panel 52 is separated from the rotation piece 56 The outer surface of the support 10 can be closed.

Accordingly, it is possible to provide a soundproof panel capable of joining the main body and the sound absorbing member without a separate fastening member, making the main body by the extrusion process, and easily installing the sound barrier wall, and a method of constructing the sound barrier wall using the same.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

Also, the soundproof panel and the soundproof wall construction method using the soundproof panel are described as an example. However, the soundproof panel and the soundproof wall construction method using the same may be used for the panel of the present invention.

Accordingly, the true scope of the present invention should be determined by the following claims.

10: support 12: installation groove
30: soundproof panel 32: main body
32a: restraining groove portion 32b:
32c: reinforcing rib 32d: stepped portion
32e: latching protrusion 34: sealing member
36: front part 36a: sound absorbing member
50: pressing portion 52: seat panel
52a: coupling hole portion 54:
54a: tight contact portion 54b:
56: Rotating piece 56a:
56b: compression hole portion 56c:

Claims (7)

A main body in which a support portion for supporting the restricting recess portion is formed and a step portion is formed between the restricting recess portion and the support portion, the recess portion being symmetrically opposed to the upper end portion and the lower end portion,
A sealing member that is seated on the stepped portion so as to be interposed between the main bodies when a plurality of the main bodies are stacked; And
And a sound absorbing member inserted into the restricting groove portion,
Wherein the body comprises an aluminum material and is manufactured by an extrusion process,
And a cover portion for finishing an end portion of the main body and the sound absorbing member, wherein the cover portion has a curved portion inserted at a distance between a front portion of the main body and the sound absorbing member,
A plurality of reinforcing ribs for supporting the back surface of the sound absorbing member are formed on an inner wall of the support portion, a plurality of reinforcing ribs disposed at a central portion are formed to have the shortest length, and a length of the reinforcing ribs And is formed to be stepwise long,
The cover portion is formed to have a size that can be inserted into both ends of the main body. The cover portion has a bent portion bent inward in the main body, and the bent portion has a plurality of fitting groove portions into which the reinforcing rib is inserted And the sound-absorbing panel.
The method according to claim 1,
Wherein the locking protrusion is formed on the main body so as to press the sealing member, the locking protrusion being protruded while maintaining a gap with the stepped portion.
delete (a) fabricating a main body having an upper portion and a lower portion opposite to each other and having a restricting groove portion formed symmetrically with respect to the main body portion, a support portion supporting the restricting groove portion, and a step between the restricting groove portion and the support portion;
(b) assembling a soundproof panel by inserting a sound absorbing member into the restricting groove portion and engaging a cover member to cover an end portion of the main body and an end portion of the sound absorbing member;
(c) installing a plurality of struts having the installation recessed portions on the ground so as to maintain a space therebetween;
(d) inserting the sound insulation panel along the installation recess and laminating a plurality of the sound insulation panels; And
(e) a step of pressing the main body to the installation groove side by providing a pressing portion for contacting the soundproof panel and the support,
Wherein the step (e) comprises: a contact pad detachably attached to the strut; a seat panel coupled with the contact pad to be disposed adjacent to the strut; and a seat panel rotatably and detachably attached to the seat panel by a hinge And the pressing portion including a pivoting portion having a press-in portion that is press-fitted into the installation groove portion and the main body, and the press-in portion is press-fitted into the installation groove portion and the sound-absorbing panel insert. A method of constructing a soundproofing wall using a soundproof panel.
delete 5. The method of claim 4,
Wherein the step (e) is performed by inserting the press-in portion between the installation groove portion and the main body, the press-fit portion having a wide width in comparison with the gap between the installation groove portion and the main body, Construction method of soundproof wall to use.
5. The method of claim 4,
The hinge unit including a rotary shaft projecting from the seating panel and a rotary hole formed in the rotary piece such that the rotary shaft is rotatably inserted after the step (e) is completed, Wherein the step of separating the sound insulation panel from the strut is performed.

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