Soundproof plate and accessory of the same

Abstract

To provide a soundproof wall unit which prevents diffusion of noise and can easily be disassembled and reassembled.SOLUTION: A plurality of soundproof plates 100a to 100g having main surfaces are arranged so that the main surfaces are on the same surface, are connected by connectors 200a to 200g, and are blocked by soundproof bags 600A to 600C whose volumes become large according to an air injection amount when a gap occurs to constitute a soundproof wall unit. Each of the plurality of soundproof plates 100a to 100g includes: a plate body having a water-resistant surface; and a soundproof sheet fixed to a surface on the opposite side of the water resistant surface of the plate body, and is covered with the soundproof sheet and a first fabric material in which an exposed surface of the plate body has vibration absorption property, such as a punch carpet.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to a soundproof panel that is temporarily installed near a noise source to prevent the diffusion of noise to the surroundings and is easy to disassemble and reassemble, and accessories thereof.

Background Art

[0002] As a technology for preventing the diffusion of noise to the surroundings, for example, a soundproof panel described in Patent Document 1, a vibration-proof material described in Patent Document 2, a sound-absorbing mat described in Patent Document 3, etc. are known. The soundproof panel described in Patent Document 1 includes a frame body having a connecting portion formed at its edge for connecting each other to cover a noise source, a reinforcing material provided at an appropriate position within the frame body, an iron plate layer provided below the reinforcing material, a concrete layer placed on the lower surface of the iron plate layer, and a sound-absorbing layer provided via an air layer on the lower surface of the concrete layer. Further, the vibration-proof material described in Patent Document 2 is configured such that a plurality of vibration-proof rubbers are arranged at a predetermined interval, and a synthetic resin foam, a plate material, or a net material is laminated and arranged in the interval portion, and the vibration-proof rubber, the synthetic resin foam, and the plate material or the net material are integrally formed. The sound-absorbing mat described in Patent Document 3 is configured by surrounding a sheet-like material having sound-absorbing properties or sound-absorbing and heat-insulating properties with a natural or synthetic fabric, and reinforcing the edge of the fabric surrounding the sheet-like material with a reinforcing material.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] At the construction site of building interior work, soundproof walls are often installed or moved according to the work location. Also, during work, various frequencies of noise are mixed, such as the impact sound when an electric tool operates, the impact sound when metal building materials collide with each other, and the voices of workers. The soundproof panel described in Patent Document 1 is composed of an iron plate layer and a concrete layer, so although it has high rigidity, once installed, it is difficult to change its size or relocate it, and it is not suitable for temporary use. The same applies to the vibration-proof material described in Patent Document 2. Since the vibration-proof rubber, synthetic resin foam, plate material, or mesh material are integrally formed, it is difficult to relocate it after installation, and it is not suitable for temporary use. In addition, the sound-absorbing mat described in Patent Document 3 only reinforces the edge of the fabric surrounded by the sheet-like material with a reinforcing material, so it is difficult to obtain sufficient rigidity for use as a soundproof wall.

[0005] The main object of the present invention is to provide a soundproof wall unit that can be temporarily installed in any size near noise sources of various frequencies to prevent the diffusion of noise and is easy to disassemble and reassemble. Another object of the present invention is to provide a manufacturing method for a soundproof panel that is a main component of the soundproof wall unit. Other objects of the present invention will become apparent from the embodiments described below.

Means for Solving the Problems

[0006] An embodiment of the present invention is a soundproof wall unit formed by arranging a plurality of soundproof panels having main surfaces so that their main surfaces are on the same plane. Each of the plurality of soundproof panels includes a plate body having a water-resistant surface and a sound insulation sheet fixed to the surface of the plate body opposite to the water-resistant surface, and the exposed surfaces of the sound insulation sheet and the plate body are covered with a first fabric material having heat insulation and vibration-proof properties.

[0007] Another embodiment of the present invention is a soundproof panel including a plate body and a sound insulation sheet fixed to the plate body, wherein the exposed surfaces of the sound insulation sheet and the plate body are covered with a first fabric material, and a sound-absorbing material is interposed between the sound insulation sheet and the first fabric material.

Effects of the Invention

[0008] According to the present invention, since the soundproof material is used not only as a sound insulation material but also as a sound absorption material, it has high rigidity and can function as a wall by itself. In addition, there is no need to use an expensive soundproof material, and the soundproof performance against the manufacturing cost can be significantly improved.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, for example, at the site of interior construction work of a building, etc., when using power tools, various sounds including sounds with frequencies other than audible sounds such as impact sounds, motor sounds, collision sounds of metal members, and voices of workers suddenly occur. An example of application to a sound insulation wall unit temporarily installed to surround a work site will be described. The sound insulation wall unit of this embodiment is configured to include a plurality of sound insulation boards, a filling bag having flexibility, a sound insulation bag for closing gaps, etc., and a connecting tool for detachably connecting adjacent sound insulation boards, which is used as needed.

[0011] <Sound insulation board> FIG. 1(a) is a perspective view of the sound insulation board 100 according to this embodiment, (b) is a top view of the main surface (wide surface) viewed from above, (c) is a structural explanatory view of the side of the sound insulation board 100, and (d) is a structural explanatory view of the end face side of the sound insulation board 100. Referring to FIGS. 1(a) and (b), the sound insulation board 100 is a rectangular or substantially rectangular panel body with the size of the longitudinal (long side) of the wide surface as W11, the size of the transverse (width) as H11, and the size of the height (thickness) as D11. These longitudinal and transverse sizes W11 and H11 may be small sizes that become the basic size (910 mm × 1820 mm) of veneer boards when there are multiple sheets. Also, multiple sheets with the same longitudinal and transverse sizes W11 and H11 are manufactured, and in that case, it is desirable to keep the thickness D11 substantially the same. Note that in FIGS. 1(c) and (d), for the convenience of structural explanation, members that are actually in contact are separated from each other, and therefore, it is shown with a size larger than the actual thickness D11 of the sound insulation board 100.

[0012] The sound insulation board 100 is based on a plate body 11 having high rigidity that does not deform even when tools, metal members, etc. collide. For the plate body 11, a wood (e.g., lauan) plywood 112 whose surface of the wide surface is a water-resistant surface 111 can be used. The wood plywood 112 is manufactured by heating and pressing a plurality of types of wood with different sound absorption rates, transmission rates, or reflection coefficients into standard longitudinal and transverse sizes. If they have the same thickness, they have higher rigidity than single-layer boards and also have a sound absorption and shielding effect.

[0013] In addition, since the water-resistant surface 111 is coated with a water-resistant paint containing a curing agent or the like after the exposed surface of the plywood structure of the wood plywood is polished, it blocks the passage of vertically incident sound and has the effect of reflecting sound incident at angles other than vertical. Among the reflected sounds, the sound that heads back to the wood plywood 112 has its sound pressure attenuated and eventually disappears. The plate body 11 may be created by coating the surface of a general wood plywood with a water-resistant paint, but it is also possible to use a wooden concrete panel (hereinafter abbreviated as "concrete panel") that is a plywood for a concrete formwork, cut to a predetermined size. Since the concrete panel may be one used in concrete manufacturing work, the sound insulation cost performance can be improved. In the following description, the plate body 11 may sometimes be referred to as the concrete panel 11.

[0014] The sound insulation board 100 can be manufactured, for example, through the process shown in FIG. 2. First, a concrete panel 11 with a size obtained by cutting a predetermined size, for example, the basic size of the concrete panel 11 (910 mm × 1820 mm), into an integer fraction is set on a workbench. If necessary, ghost eye nuts (registered trademark) are driven into the four end faces or the corners of the wide faces (S101). The ghost eye nuts are used, for example, to connect a plurality of sound insulation boards 100 at a predetermined angle with respect to the main surface to assemble a sound insulation room, or to reinforce the connecting tool 200 described later. By using the ghost eye nuts, it is possible to disassemble and reassemble any number of times without damaging the member structure.

[0015] After setting the concrete panel 11 with a predetermined size on the workbench, next, the sheet-shaped sound insulation rubber mat 12 is cut to match the vertical and horizontal sizes of the concrete panel 11 (S102). The sound insulation rubber mat 12 can be cut from commercially available products. The sound insulation rubber mat 12 can be one that blocks the passage of sound and has a thickness that absorbs vibrations caused by the sound pressure applied to the surface, particularly low-frequency sound below 900 Hz.

[0016] Also, wrap the cotton-like glass wool 13 with the glass cloth 14, and laminate this on the exposed surface of the soundproof rubber mat 12 to create a composite sheet (S103). As the glass wool 13, a commercially available material that can absorb vibration waves of various frequencies transmitted with random sound pressures from various directions, especially sounds of various frequencies of 900 Hz or more, with a sound absorption rate of 90% or more can be used. The glass cloth 14 itself has sound absorption properties and serves to mold the glass wool 13 into a square prism shape on the plate body 11. Different materials with different sound absorption rates can be used for the glass wool 13 and the glass cloth 14.

[0017] The glass cloth 14 may wrap all of the glass wool 13, or may wrap the glass wool 13 in a state where it is formed into a sheet shape and its wide portion is exposed. The composite sheet thus created functions as a composite sound-absorbing material that effectively absorbs sounds incident from various directions with various frequencies and sound pressures. Therefore, the propagation of sound inside and outside the composite sheet can be effectively blocked.

[0018] Fix the composite sheet created as described above to the surface (back surface) opposite to the water-resistant surface 111 (front surface) of the panel 11 (S104). As a result, with the water-resistant surface 111 of the panel 11 as the base layer, the wood plywood 112, the soundproof rubber mat 12, the glass wool 13, and the glass cloth 14 are laminated in this order, and the vibration of sound, the transmission of vibration, and the passage of sound through the front and back surfaces of the panel 11 near the panel 11 are more reliably blocked.

[0019] Next, bond the end punch carpet 15 to the end face of the panel 11 (S105). The end punch carpet 15 suppresses the entry of sound from the ends and the leakage of sound to the outside. The end punch carpet 15 may be made of the same heat-insulating and vibration-proof fabric material as the back part punch carpet 16 and the front part punch pad 17 described later, or may be made of different types of fabric materials. Alternatively, a soundproof rubber sheet or other shielding sheet may be bonded, or it may be coated with a water-resistant paint.

[0020] Next, cover the back surface and all end faces of the dash panel 11 with the back panel punch carpet 16. After extending the end of the back panel punch carpet 16 to the vicinity of the end face on the surface of the dash panel 11, fasten it with the needles 101 of the tacker (S106). Also, cover the exposed part on the surface of the dash panel 11 with the surface panel punch carpet 17 and fasten it with the needles 101 of the tacker (S107). The needles 101 of the tacker are driven in such a way that, except for the corner parts of the dash panel 11, the exposed parts of each needle 101 are linear on the same plane as the exposed parts of the adjacent needles 101. At this time, driving the needles 101 at intervals where the length of the exposed part of each needle 101 is shorter than the length of the exposed part of the other adjacent needles 101 is effective in preventing the peeling and sound diffusion of each punch carpet 16, 17. Note that each punch carpet 16, 17 may be fixed with nails or wedges instead of the needles 101 of the tacker.

[0021] The back panel punch carpet 16 and the surface panel punch carpet 17 are carpets made of a non-woven fabric in which fibers are intertwined, and the surface thereof is a base material to which a processing sheet material (second base material) that raises in a hook shape, which will be described later, is detachably attached. As long as it is a base material to which such a processing sheet material is attached and a base material that ensures heat insulation, a base material other than the punch carpet can also be used.

[0022] Finally, cut the vicinity of the grommet nut crosswise with a cutter (S108). When using the grommet nut, roll up the cut part. When not using the grommet nut, return the cut part to its original state so that the grommet nut is not exposed.

[0023] The soundproof panel 100 manufactured as described above uses the dash panel 11 as a base material, the waterproof surface 111 as a sound insulation material, and the wood plywood 112 as a sound absorption material. Therefore, it has high rigidity and can function as a wall by itself. Also, the soundproof rubber mat 12 suppresses the diffusion of low-frequency sound below 900 Hz, and the glass wool 13 and the glass cloth 14 absorb audible frequency sound above 900 Hz. Therefore, there is no need to use expensive sound insulation materials, and the soundproof performance against the manufacturing cost can be significantly improved. Furthermore, it is also possible to assemble a sound insulation wall unit of any size by arranging a plurality of sound insulation boards 100 such that their main surfaces are on the same plane, or to form a part of a sound insulation room by three-dimensionally connecting a plurality of sound insulation walls. In addition, since the sound insulation wall unit can also disassemble and reassemble each sound insulation board 100, the temporary installation work can be extremely simplified.

[0024] In addition, in this embodiment, an example using the sound insulation rubber mat 12 as the sound insulation sheet has been described, but a synthetic resin plate such as an acrylic plate or a plastic plate may be used instead of the sound insulation rubber mat 12.

[0025] <Connector> Next, the connector used when connecting a pair of adjacent sound insulation boards 100 on the same plane will be described. FIG. 3(a) is a plan view of the connector 200 according to this embodiment. This connector 200 can be easily created from a single metal plate, for example, a square steel plate. That is, as shown in FIG. 3(a), a planar region 203 having a pair of long sides 2031 and 2032 facing each other at an interval equal to the thickness of the sound insulation board 100 is formed parallel to the short side from approximately the center of the long side of the metal plate. Further, in the upper region and the lower region of the metal plate that are relatively above and below the planar region 203, respectively, three sides excluding the portions of the long sides 2031 and 2032 are cut out from the inner side by a predetermined distance from the outer edge. The region other than the cut-out portion becomes a frame shape.

[0026] The frame-shaped region in the upper region is referred to as the first frame region 201 for convenience. In addition, the region having the outer edge of the cut-out portion in the upper region is referred to as the first cut-out region 204 for convenience. Similarly, the frame-shaped region in the lower region is referred to as the second frame region 202 for convenience. In addition, the region having the outer edge of the cut-out portion in the lower region is referred to as the second cut-out region 205 for convenience.

[0027] Of the metal plates, the first frame region 201 and the second frame region 202 may be bent in a first direction, for example, vertically upward, or in a second direction, for example, vertically downward, with respect to the planar region 203. However, the first notch region 204 is bent in a direction opposite to that of the first frame region 201, and the second notch region 205 is bent in a direction opposite to that of the second frame region 202. FIG. 3(b) shows an example in which the first frame region 201 is bent in the first direction with respect to the planar region 203, the first notch region 204 is bent in the second direction with respect to the planar region 203, the second frame region 202 is bent in the second direction with respect to the planar region 203, and the second notch region 205 is bent in the first direction with respect to the planar region 203. FIG. 3(c) shows an example in which the first frame region 201 is bent in the first direction with respect to the planar region 203, the first notch region 204 is bent in the second direction with respect to the planar region 203, the second frame region 202 is bent in the first direction with respect to the planar region 203, and the second notch region 205 is bent in the second direction with respect to the planar region 203. Note that it may be bent in a manner opposite to the vertical direction in FIG. 3(b).

[0028] In any case, it is formed into a pair of first bent pieces that extend in the first direction and face each other from one long side and the other long side of the planar region 203, and a pair of second bent pieces that extend in the second direction and face each other from one long side and the other long side of the planar region 203. One of the two adjacent sound insulation plates is clamped by the pair of first bent pieces, and the other of the two adjacent sound insulation plates is clamped by the pair of second bent pieces. FIG. 3(d) is a front view showing a state in which two adjacent sound insulation plates 100A and 100B are connected. The first frame region 201 clamps the front side of one sound insulation plate 100A, and the first notch region 204 clamps the front side of the other sound insulation plate 100B.

[0029] By using the connector 200 having such a structure, a pair of sound insulation plates 100A and 100B with opposing end faces can be easily connected or removed. Also, even if the vertical and horizontal sizes of the sound insulation plates 100A and 100B are different, as long as their thicknesses are the same, they can be connected to easily assemble or remove a sound insulation wall unit in which the main surfaces of the sound insulation plates 100A and 100B are in the same plane.

[0030] In addition, although FIGS. 3(a) and 3(d) show examples where the metal plate is a rectangular steel plate, the shape of the metal plate may be circular, elliptical, triangular, a polygon with five or more sides, or other shapes. The size may also be arbitrary. Further, the first frame region 201 and the second frame region 202, and the first notch region 204 and the second notch region 205 may have different shapes from each other. Furthermore, after connection, a structure may be adopted in which each soundproof panel 100 is temporarily fixed by screwing or the like.

[0031] <Soundproof strip> Next, with reference to FIG. 4, the soundproof strip 300 according to the present embodiment will be described. FIG. 4(a) is a front view of the soundproof strip 300, FIG. 4(b) is a rear view, and FIG. 4(c) is a side view. The soundproof strip 300 has front and back surfaces processed into a long bag shape. On the front surface side, the same fabric material (first fabric material) 301 having the same color as the back surface punch carpet 16 or the front surface punch carpet 17 of the soundproof panel 100 can be used. On the back surface side, a processed sheet fabric material (second fabric material) 302 that is fluffed in a hook shape and is detachably attached to the surface of the back surface punch carpet 16 or the front surface punch carpet 17 can be used. A fastener 303 is provided at a substantially central portion of the processed sheet fabric material 302. The fastener 303 is provided to adjust the thickness by packing a rubber sheet, a soft acrylic sheet, a glass cloth, or the like into the cavity between the front surface portion and the back surface portion of the soundproof strip 300. Note that the position of the fastener 303 in FIG. 4 is an example, and it may be provided at other positions. Further, other fasteners instead of the fastener 303 may be used. Alternatively, after packing a rubber sheet, a glass cloth, or the like into the cavity without using a fastener, a configuration of sewing may be adopted.

[0032] The sound insulation strip 300 configured in this way has a vibration damping effect by itself with the base material, but by packing a rubber sheet or the like inside, it is possible to reduce the sound pressure of the incident sound or suppress the diffusion of the incident sound. Therefore, even when a slight gap occurs between a pair of adjacent sound insulation boards 100, by closing the gap with the sound insulation strip 300, it is possible to avoid a decrease in the sound insulation performance by each sound insulation board 100. In addition, since the surface side of the sound insulation strip 300 is composed of the first base material 301 having the same color as each sound insulation board 100, the above-mentioned gap can be covered. Further, since the processed sheet base material 302 on the back surface portion of the sound insulation strip 300 is a base material that can be detachably attached to the first base material 301, the above-mentioned gap can be easily covered, and furthermore, the sound insulation strips 300 can be laminated and used.

[0033] <Filling bag> A pipe for intake and exhaust or a hose for water supply and drainage may be provided in a part of the sound insulation wall unit, and there may be cases where the arrangement positions of these cannot be changed. In addition, there may be cases where pipes or the like are provided on the wall when using an existing wall as a sound insulation wall unit. Therefore, in this embodiment, when pipes, hoses, piping, etc. exist, a filling bag that closes the periphery thereof to suppress sound leakage and the like will be described.

[0034] FIG. 5 and FIG. 6 are explanatory views of the structure of the filling bag 500 of this embodiment. (a) is a right side view, (b) is a top view, (c) is a left side view, (d) is a front view, and (e) is a rear view, respectively. FIG. 5 and FIG. 6 have the same structure except for the different sizes, so for convenience, the same reference numerals are given.

[0035] The filling bag 500 has a bag body 501 made of a flexible third fabric material that is substantially parallelogram-shaped when viewed from the right side or the left side. The third fabric material may be a pile carpet, but from the perspective of emphasizing flexibility, thinner materials such as cotton-acrylic blend, polyester-cotton blend, cotton-linen blend, etc. can be used. The size of the bag body 501 shown in Fig. 5 is 910 mm in the longitudinal direction and 70 mm in width. Also, the size of the bag body 501 shown in Fig. 6 is 455 mm in the longitudinal direction and 70 mm in width. At least one of a sound-absorbing material and a sound-insulating material is filled inside the bag body 501. As the sound-absorbing material, a polyester material (commercially available product) having a sound absorption rate of 90% or more at frequencies of 900 Hz and above can be used. As the sound-insulating material, a sheet material (commercially available product) in which a high specific gravity component is blended with an olefin-based resin can be used.

[0036] At the front end portion of the bag body 501, an inclined portion 5011 and a non-inclined portion 5012 are provided. Also, at the rear end portion of the bag body 501, an inclined portion 5013 and a non-inclined portion 5014 are provided. The inclined portions 5011 and 5013 are provided to reduce the gap at the center when wound in a spiral shape from the center toward the outer peripheral direction and to reduce the deviation of the outer peripheral diameter. Also, they are provided so as to form a substantially same-diameter annular shape when the ends face each other. Also, the non-inclined portions 5012 and 5014 are provided to make the inner corner portions bite into the vicinity of the bases of the inclined portions 5011 and 5013 and be difficult to separate when the filling bag 500 is wound. Note that the non-inclined portions 5012 and 5014 are corner portions in the illustrated example, but since the filling bag 500 is filled with a sound-absorbing material or the like, the actual shape is close to an R shape.

[0037] The filling bag 500 configured in this way is used, for example, to fill a gap when there is a gap around a pipe or the like because a pipe or the like exists in the central portion of a rectangular parallelepiped space surrounded by a plurality of sound insulation walls 100. And the relatively long one illustrated in Fig. 5 is often used by being wound around a pipe or the like in a spiral shape. Since a pair of end portions are the inclined portions 5011 and 5013 respectively, the gap at the starting portion of winding around the pipe or the like can be reduced. Also, the gap between the end face of the sound insulation wall 100 and the outermost end can be reduced. In addition, the non-inclined portions 5012 and 5014 can maintain a spiral or annular shape. Therefore, the sound transmitted to the compensation bag 500 through the pipe is absorbed by the sound-absorbing material or sound-insulating material filled in the bag body 501, and the diffusion around the pipe is suppressed.

[0038] <Soundproof bag> Next, the soundproof bag 600 according to the present embodiment will be described. This soundproof bag 600 includes a bag body that enters into a gap that cannot be completely shielded by the above-described soundproof plate 100 and whose volume changes according to the amount of fluid that has entered through the fluid intake mechanism.

[0039] FIG. 7(a) is a top view of an elastic tube (rubber tube in this example) 601, which is a main component of the soundproof bag 600, and FIG. 7(b) is a side view thereof. FIG. 8 is an explanatory diagram of the structure of this soundproof bag 600. In the present embodiment, an example in the case of using compressed air as the fluid will be given. The bag body is mainly configured by covering the periphery of a rubber tube 601 in which an air filling space 610 is formed with a sound-absorbing material 612 and a sound-insulating sheet 613 in contact therewith, and then covering the whole with a first fabric material (punch carpet) 602 of the same color as that used in the soundproof plate 100.

[0040] The rubber tube 601 is, for example, square in top view as shown in FIG. 7(a) and substantially elliptical in side view as shown in FIG. 7(b). Both ends of the rubber tube 601 are sealed with rubber plates 605 and 606.

[0041] A fluid intake mechanism is attached to a predetermined portion of the rubber tube 601. In the present embodiment, the fluid intake mechanism mainly includes an American Valve 604. The American Valve 604 is a valve having the same structure as that used in automobiles and motorcycles in the United States and is commercially available as having a structure that can withstand an air pressure of 300 to 600 kPa. That is, a spring is attached to a plunger (valve body), and the valve is opened and closed by the expansion and contraction force thereof. It is said to have high durability and the least air leakage and excellent air retention compared to British valves and French valves.

[0042] In this embodiment, a valve base 6040 is fixed inside a rubber tube 601 via an internal rubber packing 6042, and an external rubber packing 6043, a washer 6044, and a spring washer 6045 are inserted between the valve stem 6041 outside the rubber tube 601 and fastened and fixed with a nut 6046, which is used as a fluid intake mechanism. The valve stem 6041 is L-shaped and fixed to the output part of an air compressor (not shown) with a nut 6047.

[0043] The size of the rubber tube 601 is arbitrary. As an example, the length L71 in the longitudinal direction is about 910 mm corresponding to the width among the basic sizes of the panel 11, the length (protrusion amount) L72 of the rubber plates 605 and 606 is 15 mm, the length L73 from the tip of one rubber plate 605 to the mounting position of the American valve 604 is 150 mm, and the thickness D71 is 6 mm.

[0044] When the sound insulation bag 600 has such a structure and is in the initial state with air removed, its size is only the thickness of the rubber tube 601, the sound-absorbing material 612, and the shielding sheet 613. In this initial state, the American valve 604 is pushed out to the front and set in a narrow gap, and then compressed air is injected from the American valve 604, causing the sound insulation bag 600 to expand and close the gap. When disassembling, the air is removed to return it to the initial state, and when reassembling, compressed air may be injected as described above.

[0045] <Usage mode of sound insulation board, etc.> Next, the usage mode of the sound insulation board 100, etc. described above will be explained. FIG. 9 is a diagram showing an aspect of the sound insulation wall unit of this embodiment, and a partial example of the sound insulation wall unit in which eleven sound insulation boards 100a to 100k are connected and abutted against the surface of an existing wall of a building is shown. Here, the sound insulation boards 100a to 100d and the sound insulation boards 100e to 100h are of the same size, but an example is shown in which the sound insulation boards 100i to 100k have the same height but a smaller width. Also, although it is not necessarily the case, the connectors 200a to 200c for connecting the sound insulation boards 100a to 100d and the connectors 200e to 200g for connecting the sound insulation boards 100e to 100h are of the same size, but the connectors 200h and 200i for connecting the sound insulation boards 100i to 100k are of a slightly smaller size. Also, a gap is generated between the small-sized sound insulation boards 100i to 100k and the large-sized sound insulation boards 100e to 100h. Therefore, three sound insulation bags 600A to 600C of different lengths are mounted in the gap and inflated by compressed air via the American valve 604 to block the gap. Also, an existing pipe 900 exists at the upper part of the figure. Since the periphery of this pipe 900 cannot be blocked by the sound insulation board 100, the filling bag 500 is wound to block the periphery of the pipe 900.

[0046] FIG. 10 shows an example in which the sound insulation bands 300A to 300F are attached to the sound insulation wall unit of FIG. 9. In the case of FIG. 9, depending on the frequency and sound pressure of the incident sound, there is a possibility of leakage from the joint portions of the sound insulation boards 100a to 100h and the gaps between the sound insulation bags 600A to 600C. Also, since the connectors 200a to 200g are also exposed, a patched feeling remains. Therefore, in the example of FIG. 10, the sound insulation bands 300A to 300F are attached to the above joint portions, and another sound insulation band 300G to 300L is attached on these sound insulation bands 300A to 300F. The sound insulation bands 300A to 300L are punch carpets of the same color and the same material as the sound insulation boards 100a to 100h, so the sound insulation wall unit can be used without a sense of incongruity as a single sound insulation wall. In the example of FIG. 10, although the sound insulation band 300 is not attached to the portion of the filling bag 500 near the pipe 900, by using a sound insulation band 300 of a size that partially overlaps the sound insulation boards 100a, 100i, and 100e around the filling bag 500, the area where the filling bag 500 is exposed can be reduced.

[0047] Thus, according to this embodiment, a plurality of sound insulation plates 100 that prevent the diffusion of sounds of various frequencies are detachably connected by a coupler 200, a sound insulation strip 300 is detachably attached to the gap generated during connection, and when the gap is large, it is blocked with a sound insulation bag 600, and when there is a pipe 900, the periphery thereof is blocked with a filling bag 500. Therefore, it is possible to prevent the diffusion of noises of various frequencies and to realize a sound insulation wall unit that is easy to disassemble and reassemble. Note that the usage modes of the sound insulation plate 100, the coupler 200, the filling bag 500, and the sound insulation bag 600 are not necessarily represented by the modes in FIGS. 9 and 10. In addition, the sound insulation wall unit using the sound insulation plate 100 of this embodiment can be used not only at a construction site but also as a sound insulation wall in a home or a business office.

Claims

1. A soundproof panel comprising a plate body and a sound insulation sheet fixed to the plate body, wherein an exposed surface of the sound insulation sheet and the plate body is covered with a first fabric material, and a sound absorption material is interposed between the sound insulation sheet and the first fabric material. Soundproof panel.

2. The soundproof panel according to Claim 1, wherein the sound insulation sheet is made of rubber, resin, or a combination thereof. The soundproof panel according to Claim 1.

3. The soundproof panel according to Claim 1, wherein the first fabric material is a fabric material having heat insulation and vibration damping properties. The soundproof panel according to Claim 1.

4. A soundproof strip used together with the soundproof panel according to Claim 1, 2, or 3, having a front and a back surface, wherein a second fabric material is provided on the back surface side and is detachably attached to an arbitrary part of the first fabric material, and the first fabric material is provided on the front surface side. Soundproof strip.

5. A connector made of a metal plate and used together with the soundproof panel according to Claim 1, 2, or 3, wherein one metal plate has a planar region having a pair of long sides facing each other at an interval corresponding to the thickness of the soundproof panel, a pair of first bent pieces extending in a first direction from one long side and the other long side of the planar region and facing each other, and a pair of second bent pieces extending in a second direction from one long side and the other long side of the planar region and facing each other, and is formed into these shapes. One of two adjacent soundproof panels is clamped by the pair of first bent pieces, and the other of the two adjacent soundproof panels is clamped by the pair of second bent pieces. Connector.

Images