Sound insulating panel mounting structure and mounting method

Abstract

To provide a mounting structure and a mounting method of a sound insulating panel, capable of preventing dislocation of a mounting position of a fixing metal fitting and falling-off of the sound insulating panel, by moving the fixing metal fitting by following the sound insulating panel.SOLUTION: The sound insulating panel includes a fixing metal fitting for fixing the sound insulating panel to the groove portion of the support column, and a displacement preventing metal fitting for restricting movement of the fixing metal fitting, wherein a thickness of a side end portion of the sound insulating panel is set to be smaller than a groove width of the groove portion, the sound insulating panel is inserted into the groove portion, the fixing metal fitting is disposed in a gap between a side surface of the groove portion and the sound insulating panel, and the fixing metal fitting has a spring portion that exerts an elastic restoring force, and the spring portion includes a first vertical side portion that extends in an up-down direction and abuts on one surface of the sound insulating panel, and a second vertical side portion that faces the first vertical side portion and abuts on the side surface of the groove portion. The slip prevention fitting has a fitting body fixed to one surface of the sound insulation panel, and an engagement part engaged with a side end part of the sound insulation panel, and the fitting body is arranged in a clearance between the first vertical side part and the second vertical side part.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a mounting structure and a mounting method for a sound-insulating panel used in a sound-insulating wall. [Background technology]

[0002] Conventionally, sound insulation walls that are installed along expressways and the like to reduce noise pollution caused by passing vehicles have been known. Various structures of such sound insulation walls have been known, and for example, Patent Document 1 describes a sound insulation wall structure in which a sound insulation panel is inserted into a groove formed in a support pillar, and the sound insulation panel is fixed to the support pillar by a leaf spring type fixing metal fitting that is arranged between the sound insulation panel and the groove of the support pillar. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-14307 Summary of the Invention [Problem to be solved by the invention]

[0004] The conventional mounting structure for sound insulation panels shown in Patent Document 1 is strong against external forces acting perpendicularly to the front or back of the sound insulation panel, and can therefore be used for sound insulation walls installed on highway bridges and other structures that are constantly exposed to crosswinds.

[0005] In recent years, there has been a demand for noise control measures for factories and other facilities being built near residential areas, and the demand for sound insulation walls that can be installed in such locations is increasing. However, depending on the installation environment of the sound insulation wall, it may be necessary to install it on ground that is susceptible to earthquakes and other damage, as opposed to being installed on solid foundations such as highway bridges.

[0006] Conventionally, when sound insulation walls are installed on highway bridges and the like, the external force acting on the support pillars is mainly wind load transmitted through the sound insulation panel, which acts only vertically to the front or back of the sound insulation panel.

[0007] On the other hand, if it is necessary to erect support pillars on a site with weak ground, the external forces acting on the pillars will be susceptible to influences from the ground in addition to wind loads transmitted through the soundproofing panels, and the external forces acting in the width direction of the soundproofing panels will also increase.

[0008] For this reason, when a sound insulation wall is installed on a site with weak ground, the support posts may sway in the width direction of the sound insulation panel in response to changes in the ground, changing the spacing between adjacent support posts, as shown in Figure 11, or the sound insulation panel and fixing brackets may move together due to earthquake shaking.

[0009] Furthermore, with conventional sound-insulating panel mounting structures, repeated earthquake shaking causes the sound-insulating panel to move back to its original position due to inertial force, but the leaf spring-type fixing brackets cannot follow the movement of the sound-insulating panel, and the mounting position of the fixing brackets relative to the sound-insulating panel may shift, as shown in Figure 12. If this type of shift in the mounting position of the fixing brackets is repeated, there is a risk that the fixing brackets will fall off the sound-insulating panel, and ultimately the sound-insulating panel will fall off the support, as shown in Figure 13.

[0010] Therefore, the present invention has been made in consideration of the above matters, and an object of the present invention is to provide a mounting structure for a sound-insulating panel that allows the fixing brackets to move in tandem with the sound-insulating panel even when the sound-insulating panel moves widthwise relative to the support posts, thereby preventing the fixing brackets from shifting from their mounting position and the resulting detachment of the sound-insulating panel.

[0011] The same problems also exist with sound insulation walls that have already been installed. For this reason, they need to be modified so that the fixing brackets can move along with the sound insulation panels. However, simply fixing the fixing brackets to the sound insulation panels using fastening members or the like requires disassembling the existing sound insulation wall, which is time-consuming and costly.

[0012] Therefore, an object of the present invention is to provide a method for attaching a sound-insulating panel that can easily renovate an existing sound-insulating wall without disassembling it. [Means for solving the problem]

[0013] The present invention has been made to achieve the above object and has the following features.

[0014] The mounting structure for a sound-insulating panel according to the present invention is a mounting structure for a sound-insulating panel for mounting a sound-insulating panel to a support pole having a groove, and comprises a fixing bracket that fixes the sound-insulating panel to the support pole, and a stopper that restricts movement of the fixing bracket, wherein the side end of the sound-insulating panel has a thickness set to be smaller than the groove width of the groove and is inserted into the groove, the fixing bracket is disposed in the gap between the side surface of the groove and the sound-insulating panel, and has a spring portion that exerts elastic restoring force, the spring portion having a first vertical piece that extends in the up-down direction and abuts against one surface of the sound-insulating panel, and a second vertical piece that faces the first vertical piece and abuts against the side surface of the groove, the stopper has a fitting main body that is fixed to one surface of the sound-insulating panel, and an engaging portion that engages with the side end of the sound-insulating panel, and the fitting main body is disposed in the gap between the first vertical piece and the second vertical piece.

[0015] In the mounting structure for a sound-insulating panel according to the present invention, it is preferable that the engaging portion is formed by folding back one end of the metal fitting body and is formed so that the angle it forms with the metal fitting body is 90 degrees or less.

[0016] In the mounting structure for a sound-insulating panel according to the present invention, it is preferable that the side end portion of the sound-insulating panel is formed to have a U-shaped cross section.

[0017] In the mounting structure for a sound-insulating panel according to the present invention, it is preferable that the stopper fitting is fixed to the sound-insulating panel via a spacer that corresponds to the thickness of the first vertical piece portion.

[0018] The method for installing a sound-insulating panel according to the present invention is a method for installing a sound-insulating panel on a support pole having a groove, and is characterized by comprising: a sound-insulating panel inserting step for inserting a side end of the sound-insulating panel into the groove; a fixing bracket inserting step for inserting a fixing bracket having a spring portion into a gap between a side surface of the groove and one surface of the sound-insulating panel; and a slip-stop bracket attaching step for attaching a slip-stop bracket that restricts movement of the fixing bracket.

[0019] In the method for installing a sound-insulating panel according to the present invention, it is preferable that the spring portion has a first vertical piece that extends in the vertical direction and abuts against one surface of the sound-insulating panel, and a second vertical piece that faces the first vertical piece and abuts against a side surface of the groove portion, and the anti-slip fitting has a fitting body that is fixed to one surface of the sound-insulating panel and an engaging portion that engages with a side end of the sound-insulating panel, and that the fitting body is positioned in the gap between the first vertical piece and the second vertical piece.

[0020] In the sound-insulating panel installation method according to the present invention, the anti-slip fitting installation step preferably comprises: an anti-slip fitting insertion step of passing the engaging portion through the gap between the first vertical piece and the second vertical piece from the widthwise center of the sound-insulating panel toward the widthwise outer side; an anti-slip fitting engagement step of moving the engaging portion from the widthwise outer side of the sound-insulating panel toward the widthwise center side to engage with the side end of the sound-insulating panel; and an anti-slip fitting fixing step of fixing the fitting main body to one surface of the sound-insulating panel.

[0021] The above summary of the invention does not list all of the features necessary for the present invention, and subcombinations of these features may also constitute inventions. [Effects of the Invention]

[0022] According to the mounting structure for a sound-insulating panel of the present invention, even if the sound-insulating panel moves widthwise relative to the support, the fixing bracket moves in conjunction with the sound-insulating panel, preventing the fixing bracket from shifting from its mounting position relative to the sound-insulating panel.

[0023] Furthermore, according to the mounting direction of the sound-insulating panel of the present invention, existing sound-insulating walls can be easily modified without disassembling them, and displacement of the mounting positions of the fastening metal fittings relative to the sound-insulating panel can be prevented. [Brief explanation of the drawings]

[0024] [Figure 1] FIG. 1 is a perspective view showing a sound insulating wall according to an embodiment of the present invention; [Figure 2] FIG. 1 is a perspective view showing a mounting structure for a sound-insulating panel according to an embodiment of the present invention; [Figure 3] XX cross section of Figure 2 [Figure 4] 1 is a rear view showing the mounting structure of the sound-insulating panel of the present embodiment. [Figure 5] YY cross section of Figure 4 [Figure 6] FIG. 1 is a side view showing a fixing bracket according to the present embodiment; [Figure 7] FIG. 10 is a side view showing a fixture according to another embodiment of the present invention. [Figure 8] FIG. 10 is a side view showing a fixture according to still another embodiment of the present invention. [Figure 9] FIG. 1 is a perspective view showing a stopper fitting according to an embodiment of the present invention; [Figure 10] 1 is a block diagram showing a method for attaching a sound-insulating panel according to an embodiment of the present invention; [Figure 11] FIG. 1 is a perspective view showing how a sound-insulating panel and a fastening bracket move simultaneously in a conventional sound-insulating panel mounting structure. [Figure 12] FIG. 1 is a perspective view showing how only the sound-insulating panel moves in a conventional sound-insulating panel mounting structure. [Figure 13] FIG. 1 is a perspective view showing a state in which a fastening bracket falls off a sound-insulating panel in a conventional mounting structure for a sound-insulating panel. DETAILED DESCRIPTION OF THE INVENTION

[0025] Preferred embodiments for carrying out the present invention will be described below with reference to the drawings. Note that the following embodiments do not limit the inventions according to the claims, and not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention.

[0026] FIG. 1 is a perspective view showing a sound-insulating wall of this embodiment, FIG. 2 is a perspective view showing the mounting structure of a sound-insulating panel of this embodiment, FIG. 3 is a cross-sectional view taken along line XX of FIG. 2, FIG. 4 is a rear view showing the mounting structure of a sound-insulating panel of this embodiment, FIG. 5 is a cross-sectional view taken along line YY of FIG. 4, FIG. 6 is a side view showing a fixing bracket of this embodiment, FIG. 7 is a side view showing a fixing bracket of another embodiment of the present invention, FIG. 8 is a side view showing a fixing bracket of yet another embodiment of the present invention, FIG. 9 is a perspective view showing a slip-preventing bracket of this embodiment, FIG. 11 is a perspective view showing how the sound-insulating panel and fixing bracket move simultaneously in a conventional mounting structure for a sound-insulating panel, FIG. 12 is a perspective view showing how only the sound-insulating panel moves in a conventional mounting structure for a sound-insulating panel, and FIG. 13 is a perspective view showing how the fixing bracket falls off the sound-insulating panel in a conventional mounting structure for a sound-insulating panel. In this specification, the front-to-rear direction and width direction of the sound insulating wall and sound insulating panel are defined as the directions of the arrows shown in Fig. 1. Also, the front side and rear side in the front-to-rear direction are defined as the directions of the arrows shown in Fig. 1. Also, in this specification, the front side is the direction in which the noise source is located relative to the sound insulating wall and sound insulating panel.

[0027] As shown in Figure 1, a sound-insulating wall 1 constructed using the mounting structure for sound-insulating panels according to this embodiment includes posts 10 erected on the ground at predetermined intervals, and sound-insulating panels 20 arranged between adjacent posts 10 and stacked vertically in multiple layers.

[0028] The pillar 10 is made of an H-shaped steel and has two grooves 11 with a U-shaped cross section that extend in the longitudinal direction of the pillar 10, as shown in Fig. 5. The grooves 11 open in the width direction of the sound insulating wall 1, and the grooves 11 of adjacent pillars 10 face each other. The grooves 11 are formed by side surfaces 12a and 12b that are flange portions of the H-shaped steel, and a web portion 13 that connects the side surfaces 12a and 12b. In this embodiment, the flange portion located on the back side of the sound insulating wall 1 is called the side surface 12a, and the flange portion located on the front side of the sound insulating wall 1 is called the side surface 12b.

[0029] As shown in FIGS. 2 and 3, the sound-insulating panel 20 includes a housing portion 21 and a sound-absorbing material 30 housed inside the housing portion 21.

[0030] The storage section 21 is formed in a substantially box shape and includes a front panel 22, a rear panel 23, and side panels 24.

[0031] 3, the front plate 22 is formed from a thin steel plate. As an example of the material that can be used for the front plate 22, an aluminum steel plate or the like can be used. When the front plate 22 is attached to the support 10, the front plate 22 has a louver portion 22a that is arranged on the surface that faces the front side, which is the noise source side, and an upper extension portion 22b that extends obliquely downward from the upper end of the front plate 22 toward the back side.

[0032] Louver portion 22a has a plurality of blade portions that slope diagonally downward, and gaps are formed between the upper and lower blade portions to connect the outside and inside of sound-insulating panel 20. By providing such louver portion 22a, sound-absorbing material 30 located inside sound-insulating panel 20 can effectively absorb external noise. In addition, because the blade portions slope diagonally downward, rainwater and the like are prevented from entering the inside of sound-insulating panel 20, and deterioration of sound-absorbing material 30 is prevented.

[0033] As shown in FIG. 3 , the back panel 23 is formed from a thin steel plate. One example of the material that can be used for the back panel 23 is a galvanized steel plate. The back panel 23 has an upper extension portion 23a that extends obliquely upward from the upper end of the back panel 23 toward the front side, a main plate portion 23b that forms the surface facing the back side, and a lower extension portion 23c that extends obliquely upward from the lower end of the back panel 23 toward the front side. The back panel 23 also has a bent portion 23d near the center in the up-down direction that is bent to approach the sound-absorbing material 30, and a pressing portion 23e that abuts against the sound-absorbing material 30. The sound-absorbing material 30 in the housing 21 is sandwiched between the pressing portion 23e and the inner surface of the front panel 22 and held in an appropriate position.

[0034] 3, the upper extension portion 22b of the front plate 22 and the upper extension portion 23a of the back plate 23 are fixed to overlap each other, forming a surface that closes the top of the approximately box-shaped storage section 21. The upper extension portion 22b of the front plate 22 and the upper extension portion 23a of the back plate 23 may be fixed to each other by fitting them together, or may be fixed using a fastening member such as a rivet.

[0035] As shown in FIG. 3, the lower extension of the back plate 23 engages with the lower end of the front plate 22, forming a surface that closes the lower part of the substantially box-shaped housing portion 21.

[0036] As shown in FIG. 5 , the side panels 24 are provided at both widthwise ends of the storage section 21. The side panels 24 are formed from thin steel plates. For example, galvanized steel plates or the like can be used as the material for the side panels 24. The side panels 24 have a U-shaped cross section and include a pair of side panels 24a, 24b and a groove 24d formed by a groove bottom 24c connecting the side panels 24a, 24b. The side panels 24 are disposed between the front panel 22 and the rear panel 23 so that the groove 24d opens outward in the widthwise direction. The side panels 24 are fixed with fastening members such as rivets, with the side panels 24a and 24b fastened to the rear panel 23 and the front panel 22, respectively. The side panels 24 thus formed close both widthwise ends of the storage section 21, thereby enabling the sound-absorbing material 30 disposed within the storage section 21 to be held in place without falling off.

[0037] An eyebolt (not shown) may be attached to the groove bottom 24c of the side panel 24. A wire rope (not shown) can be passed through the eyebolt, and the tip of the wire rope is fixed to, for example, the web portion 13 of the support 10. By passing the wire rope through the eyebolt attached to the side of the sound-insulating panel 20, it is possible to prevent the sound-insulating panel 20 from falling.

[0038] The sound-absorbing material 30 is a plate-shaped member corresponding to the size of the sound-insulating panel 20, and is made, for example, of a fiber material such as polyester or glass wool, a sponge material made of resin such as urethane, a cushion material filled with cotton or feathers, or a combination of these. In addition, to prevent deterioration of the sound-absorbing material 30, a protective material with excellent weather resistance made of, for example, polyester may be used on the surface of the sound-absorbing material 30.

[0039] In this embodiment, the front panel 22 of the sound-insulating panel 20 has been described as having a louver portion 22a, but the shape of the front panel 22 is not limited to this, and it may have an opening at a position corresponding to the louver portion 22a and a shape that only has a frame body that can hold the sound-absorbing material 30.

[0040] As shown in Fig. 1, the sound-insulating panel 20 is arranged with both widthwise ends inserted from above into the grooves 11 of the adjacent support columns 10. The thickness of the sound-insulating panel 20 from the front panel 22 to the back panel 23 is set to be smaller than the groove width of the grooves 11 of the support columns 10, so that a gap of a predetermined size is formed between the sound-insulating panel 20 and the grooves 11 of the support columns 10 in the thickness direction of the sound-insulating panel 20. In this embodiment, as shown in Fig. 5, when the sound-insulating panel 20 is installed, the gap formed between the back panel 23 of the sound-insulating panel 20 and the side surface 12a of the support column 10 is referred to as gap A. The sound-insulating panel 20 arranged in this manner is fixed to the grooves 11 of the support columns 10 using fixing brackets 40.

[0041] 6, the fixing metal fitting 40 is formed by bending a plate-shaped material such as stainless steel for springs. The fixing metal fitting 40 has an upper piece portion 41 and a spring portion .

[0042] In the installed state, the upper piece portion 41 abuts against a surface that closes the top of the sound-insulating panel 20. The upper piece portion 41 extends so as to be inclined relative to a first vertical piece portion 43, which will be described later. The angle between the upper piece portion 41 and the first vertical piece portion 43 corresponds to the upper end of the back panel 23 of the sound-insulating panel 20. The upper piece portion 41 may also be provided with a through-hole 41a through which a wire rope (not shown) can be passed. The tip of the wire rope is fixed to, for example, the web portion 13 of the support 10. By passing the wire rope through the through-hole 41a, it is possible to prevent the fixing bracket 40 from falling when the sound-insulating wall 1 is in use.

[0043] The spring portion 42 is inserted into a gap A formed between the back panel 23 of the sound-insulating panel 20 and one side surface 12a of the support 10. As will be described later, the spring portion 42 exerts an elastic restoring force in the attached state, thereby pressing the sound-insulating panel 20 against the other side surface 12b of the support 10 and fixing the sound-insulating panel 20 to the support 10. The spring portion 42 includes a first vertical piece 43, a second vertical piece 44, and a first horizontal piece 45.

[0044] The first vertical piece 43 extends in the up-down direction and, in the attached state, abuts against the main plate portion 23b of the back plate 23 of the sound-insulating panel 20. A second vertical piece 44 is connected to the lower end of the first vertical piece 43.

[0045] The second vertical piece 44 extends diagonally upward from the lower end of the first vertical piece 43, opposite the upper piece 41. In this specification, the distance between the tip end 44a located above the second vertical piece 44 and the base end 43a of the first vertical piece 43 is defined as distance B. Distance B is set to be larger than the width of the gap A between the back panel 23 of the sound-insulating panel 20 and the side surface 12b of the support 10. Therefore, when the fixing bracket 40 is installed, the second vertical piece 44 abuts against the side surface 12b of the support 10, and exerts an elastic restoring force.

[0046] The second vertical piece 44 may be provided with an anti-slip portion 44b to increase the frictional force with the side surface 12a of the support 10. As shown in Fig. 6, for example, the anti-slip portion 44b is formed by cutting out a part of the second vertical piece 44 and bending it outward. A first horizontal piece 45 is connected to the upper end of the second vertical piece 44.

[0047] The first horizontal piece 45 extends obliquely downward from the upper end of the second vertical piece 44 toward the first vertical piece 43. A first contact portion 45a bent in an arc shape toward the second vertical piece 44 is formed at the tip of the first horizontal piece 45. The first contact portion 45a abuts against the first vertical piece 43 when the fixing bracket 40 is attached. Therefore, the first horizontal piece 45 exerts an elastic restoring force when the fixing bracket 40 is attached.

[0048] As shown in FIGS. 2 and 4, the mounting position of the fixing metal fittings 40 relative to the sound-insulating panel 20 is restrained by the stopper fittings 50.

[0049] As shown in Figure 9, the shear stop fitting 50 is a plate-like member with a generally J-shaped cross section. The shear stop fitting 50 is made, for example, from a steel plate, and is preferably zinc-plated or painted to prevent corrosion due to rust and the like. The shear stop fitting 50 has a metal body 51 which is a long piece, and an engaging part 52 formed at one end of the metal body 51.

[0050] As shown in Figures 4 and 5, the metal fitting body 51 is set to be longer than the width dimension of the first vertical piece 43 of the fixing metal fitting 40. In the attached state, the metal fitting body 51 is disposed in the gap between the first vertical piece 43 and the second vertical piece 44. The end of the metal fitting body 51 opposite the engagement portion 52 is fixed to the back plate 23 of the sound-insulating panel 20. A fastening member such as a rivet may be used to fix the metal fitting body 51 to the back plate 23. As shown in Figure 5, the metal fitting body 51 is preferably fixed with a spacer 53 sandwiched between it and the back plate 23.

[0051] The thickness of the spacer 53 is set to correspond to the thickness of the first vertical piece 43 of the fixing bracket 40. When the stopper bracket 50 is fixed to the sound-insulating panel 20, by sandwiching the spacer 53, the bracket body 51 can be attached parallel to the back panel 23 without interfering with the first vertical piece 43.

[0052] The engaging portion 52 is formed by folding back one end of the metal fitting body 51 in a direction that faces the sound-insulating panel 20 when the fitting is installed. As shown in Fig. 9, the engaging portion 52 is formed so that the angle α it forms with the metal fitting body 51 is 90 degrees or less, and more preferably about 30 degrees. Furthermore, as shown in Fig. 5, the engaging portion 52 engages with a groove 24d of the side panel 24, which is formed in a substantially U-shape and is a side end of the sound-insulating panel 20 when the fitting is installed.

[0053] Furthermore, as shown in Figure 5, the distance C from the surface of the metal fitting main body 51 to the tip 52a of the engaging portion 52 is set to be smaller than the gap D between the first vertical piece 43 and the second vertical piece 44 when the fixing fitting 40 is in the attached state.

[0054] The use of a stopper fitting 50 having such an engaging portion 52 makes it possible to prevent the mounting position of the mounting fitting 40 relative to the sound-insulating panel 20 from shifting, without the need to directly fix the mounting fitting 40 to the sound-insulating panel 20. Even if the sound-insulating panel 20 or the support 10 is subjected to an external force and moves in the width direction when the sound-insulating wall 1 is in use, the mounting position of the mounting fitting 40 relative to the sound-insulating panel 20 will not shift, as the mounting position of the mounting fitting 40 relative to the sound-insulating panel 20 will not shift.

[0055] Next, a method for attaching the sound-insulating panels 20 to the sound-insulating wall 1 having such a structure will be described. Figure 10 is a block diagram showing a method for attaching the sound-insulating panels in this embodiment.

[0056] First, in step S1, both widthwise ends of the sound-insulating panel 20 are inserted into the grooves 11 of adjacent supports 10 that are erected at a predetermined interval. The sound-insulating panel 20 is inserted from above into the grooves 11 of the supports 10. In this embodiment, the process in step S1 is defined as a sound-insulating panel insertion process.

[0057] Next, in step S2, the sound-insulating panel 20 is fixed to the support 10 using the fixing bracket 40. To fix the sound-insulating panel 20 with the fixing bracket 40, the spring portion 42 is inserted into the gap A generated between the back panel 23 of the sound-insulating panel 20 and the side surface 12a of the support 10, and the upper piece portion 41 is struck with a hammer or the like to insert the spring portion 42 into the gap A until the upper piece portion 41 abuts against the upper surface of the sound-insulating panel 20. The fixing bracket 40 inserted into the gap A presses the sound-insulating panel 20 against the side surface 12b, which is the other side surface of the groove portion 11 of the support 10, by its elastic restoring force, thereby increasing the frictional force between the sound-insulating panel 20 and the side surface 12b of the support 10 and fixing the sound-insulating panel 20 to the support 10. In this embodiment, the process in step S2 is defined as a fixing bracket insertion process.

[0058] Next, the stopper fittings 50 are attached to restrict movement in the width direction of the fixing fittings 40. In this embodiment, the processes from step S31 to step S33 shown below are collectively defined as a stopper fitting attachment process.

[0059] To attach the shear stopper 50, first, in step S31, the engaging portion 52 is passed through the gap D between the first vertical piece 43 and the second vertical piece 44 of the fixing bracket 40 from the center side in the width direction of the sound-insulating panel 20 (the left side in FIG. 5 ) toward the outer side in the width direction of the sound-insulating panel 20 (the right side in FIG. 5 ). In this embodiment, the process in step S31 is defined as a shear stopper insertion process.

[0060] Next, in step S32, the position of the stopper fitting 50 is moved back toward the center in the width direction of the sound-insulating panel 20 (left side in FIG. 5 ) so that the engaging portion 52 engages with the side edge of the sound-insulating panel 20. In this embodiment, the step in step S32 is defined as a stopper fitting engaging step.

[0061] Thereafter, in step S33, the metal fitting main body 51 is attached to the back plate 23 of the sound-insulating panel 20 while maintaining the engagement between the engaging portion 52 and the side edge of the sound-insulating panel 20. At this time, it is preferable to sandwich a spacer 53 between the metal fitting main body 51 and the back plate 23 of the sound-insulating panel 20. The metal fitting main body 51 is attached to the back plate 23 of the sound-insulating panel 20 by fastening members such as rivets. In this embodiment, the process in step S33 is defined as a shear-stop metal fitting fixing process.

[0062] In this way, according to the method of mounting the sound-insulating panels 20 using the anti-slip fittings 50 of this embodiment, even in the case of an already installed sound-insulating wall 1 in which a plurality of sound-insulating panels 20 are arranged so as to be stacked in the vertical direction and the sound-insulating panels 20 are fixed by the fixing fittings 40, it is possible to prevent the fixing fittings 40 from shifting without disassembling the sound-insulating panels 20, such as by removing them from the supports 10.

[0063] In this embodiment, the fixing metal fitting 40 has been described as having the shape shown in FIG. 6, but the fixing metal fitting may have the shape of fixing metal fittings 40a and 40b shown below.

[0064] As shown in Fig. 7, the fixing bracket 40a has a lower piece 43b that connects the first vertical piece 43 and the second vertical piece 44. The fixing bracket 40a also has a second horizontal piece 46 that extends diagonally downward from the first contact portion 45a toward the second vertical piece 44. A second contact portion 46a that is bent in an arc toward the first vertical piece 43 is formed at the tip of the second horizontal piece 46. The second contact portion 46a abuts against the second vertical piece 44 when the fixing bracket 40 is attached. Therefore, the second horizontal piece 46 exerts an elastic restoring force when the fixing bracket 40 is attached.

[0065] As shown in FIG. 8, the fixing metal fitting 40b differs from the fixing metal fitting 40a in the shape of the tip end of the second horizontal piece 46. The fixing bracket 40b has a third horizontal piece 47, which is formed by the tip of the second horizontal piece 46 extending diagonally upward toward the second vertical piece 44. The tip of the third horizontal piece 47 has multiple contact portions 47a that come into contact with the second vertical piece 44 when the fixing bracket 40 is attached. Therefore, the third horizontal piece 47 exerts an elastic restoring force when the fixing bracket 40 is attached.

[0066] For example, even if there are multiple types of sizes of the support posts 10 or thicknesses of the sound-insulating panels 20, the fixing brackets 40, 40a, 40b can be selected so as to be able to exert a constant elastic restoring force in accordance with the size of the gap A, which varies depending on the combination of the support posts 10 and the sound-insulating panels 20. It is clear from the claims that such modified or improved embodiments are also included within the technical scope of the present invention. [Explanation of symbols]

[0067] 1. Soundproof walls 10 pillars 11 Groove 12a, 12b side 13 Web Department 20 Soundproofing Panels 21 Storage unit 22 Front plate 22a Louver section 22b Upper extension 23 Back plate 23a Upper extension 23b Main plate part 23c Lower extension 23d bent part 23e Presser foot 24 Side plate 24a, 24b side 24c groove bottom 24d Groove 30 Sound-absorbing material 40, 40a, 40b fixing bracket 41 Top piece 41a Through hole 42 Spring part 43 First vertical piece 43a Proximal end 43b Lower piece 44 Second vertical piece 44a Tip 44b Anti-slip 45 First horizontal piece 45a First contact part 46 Second horizontal piece 46a Second contact part 47 Third horizontal piece 47a Contact part 50 Stopper 51 Metal fittings body 52 Engagement portion 53 Spacer

Claims

1. A sound-insulating panel mounting structure for mounting a sound-insulating panel to a support pole having a groove, The sound-insulating panel is provided with a fixing metal fitting that fixes the sound-insulating panel to the support pole, and a stopper metal fitting that restricts movement of the fixing metal fitting, The side end portion of the sound-insulating panel is set to have a thickness smaller than the groove width of the groove portion, and is inserted into the groove portion, the fixing metal fitting is disposed in a gap between a side surface of the groove portion and the sound-insulating panel, and has a spring portion that exerts an elastic restoring force; the spring portion has a first vertical piece portion that extends in the up-down direction and abuts against one surface of the sound-insulating panel, and a second vertical piece portion that faces the first vertical piece portion and abuts against a side surface of the groove portion, The stopper fitting has a fitting body fixed to one surface of the sound-insulating panel and an engaging portion that engages with a side end portion of the sound-insulating panel, A mounting structure for a sound-insulating panel, characterized in that the metal fitting body is disposed in a gap between the first vertical piece and the second vertical piece.

2. The mounting structure for a sound-insulating panel according to claim 1, A mounting structure for a sound-insulating panel, characterized in that the engaging portion is formed by folding back one end of the metal fitting body and is formed so that the angle it forms with the metal fitting body is 90 degrees or less.

3. The mounting structure for a sound-insulating panel according to claim 1, 10. A mounting structure for a sound-insulating panel, wherein the side end of the sound-insulating panel is formed in a U-shaped cross section.

4. The mounting structure for a sound-insulating panel according to claim 1, The sound-insulating panel mounting structure is characterized in that the stopper fitting is fixed to the sound-insulating panel via a spacer corresponding to the thickness of the first vertical piece portion.

5. A method for attaching a sound-insulating panel to a support pole having a groove, comprising: a sound-insulating panel inserting step of inserting a side end of the sound-insulating panel into the groove; a fixing metal fitting insertion step of inserting a fixing metal fitting having a spring portion into a gap between a side surface of the groove portion and one surface of the sound-insulating panel; a stopper fitting attachment step of attaching a stopper fitting that restricts movement of the fixing fitting.

6. The method for attaching a sound-insulating panel according to claim 5, the spring portion has a first vertical piece portion that extends in the up-down direction and abuts against one surface of the sound-insulating panel, and a second vertical piece portion that faces the first vertical piece portion and abuts against a side surface of the groove portion, The stopper fitting has a fitting body fixed to one surface of the sound-insulating panel and an engaging portion that engages with a side end portion of the sound-insulating panel, A method for installing a sound-insulating panel, characterized in that the metal fitting body is placed in the gap between the first vertical piece and the second vertical piece.

7. The method for attaching a sound-insulating panel according to claim 6, The stopper fitting attachment step includes a stopper fitting insertion step of passing the engagement portion through a gap between the first vertical piece and the second vertical piece from a widthwise center side of the sound-insulating panel toward a widthwise outer side. a stopper engagement step of moving the engagement portion from the outer side in the width direction of the sound-insulating panel toward the center side in the width direction to engage with the side end portion of the sound-insulating panel; a stopper fastening step for fastening the metal fitting body to one surface of the sound-insulating panel.

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