Soundproofing panels and their accessories

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 soundproofing panel and its accessories that can be temporarily installed near a noise source to prevent the noise from diffusing to the surrounding area and that can be easily disassembled and reassembled. [Background technology]

[0002] Known technologies for preventing noise from diffusing into the surrounding area include, for example, the soundproof panel described in Patent Document 1, the vibration-damping material described in Patent Document 2, and the sound-absorbing mat described in Patent Document 3. The soundproof panel described in Patent Document 1 includes a frame body with connecting portions formed on its edges for connecting the panels together and covering the noise source, reinforcing materials provided in appropriate locations within the frame body, a steel plate layer provided below the reinforcing materials, a concrete layer poured on the underside of the steel plate layer, and a sound-absorbing layer provided on the underside of the concrete layer with an air gap between them. The vibration-damping material described in Patent Document 2 includes multiple vibration-damping rubber pieces arranged at predetermined intervals, with synthetic resin foam and plate or mesh material layered and disposed in the gaps, such that the vibration-damping rubber, synthetic resin foam, and plate or mesh material are integrally formed. The sound-absorbing mat described in Patent Document 3 includes a sheet-like material with sound-absorbing or sound-insulating properties surrounded by natural or synthetic fabric, and the edges of the fabric surrounding the sheet-like material are reinforced with a reinforcing material. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-032400 [Patent Document 2] Japanese Patent Application Publication No. 09-242314 [Patent Document 3] Japanese Patent Application Publication No. 11-022055 Summary of the Invention [Problem to be solved by the invention]

[0004] At interior construction sites, soundproof walls are often installed and moved depending on the work location. During construction, various noise frequencies are generated, including the impact sounds of power tools, the impact sounds of metal building materials colliding with each other, and the voices of workers. The soundproof panel described in Patent Document 1 is composed of a steel plate layer and a concrete layer, and although it is highly rigid, it is difficult to resize or relocate once installed, making it unsuitable for temporary use. The vibration-damping material described in Patent Document 2 is also similar, being composed of vibration-damping rubber, synthetic resin foam, and plate or mesh material integrated into one piece, making it difficult to relocate after installation and unsuitable for temporary use. Furthermore, the sound-absorbing mat described in Patent Document 3 simply consists of a fabric surrounded by a sheet material and the edges of which are reinforced with a reinforcing material, making it difficult to achieve 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 that can be easily disassembled and reassembled. Another object of the present invention is to provide a method for manufacturing soundproof panels that are the main components of soundproof wall units. Other objects of the present invention will become clear from the embodiments described below. [Means for solving the problem]

[0006] An embodiment of the present invention is a soundproof wall unit comprising a plurality of soundproof panels each having a main surface and arranged so that the main surfaces are on the same plane, wherein each of the plurality of soundproof panels includes a board having a water-resistant surface and a sound-insulating sheet fixed to the surface of the board opposite the water-resistant surface, and the sound-insulating sheet and the exposed surface of the board are covered with a first base material having thermal insulation and vibration-damping properties.

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

[0008] According to the present invention, the soundproofing material is used not only as a sound-insulating material but also as a sound-absorbing material, so it has high rigidity and can function as a wall by itself. Furthermore, there is no need to use expensive soundproofing materials, and soundproofing performance relative to manufacturing cost can be significantly improved. [Brief explanation of the drawings]

[0009] [Figure 1] (a) is a perspective view of the soundproof board of this embodiment, (b) is a top view of the main surface viewed from above, (c) is an explanatory diagram of the structure of the side of the soundproof board, and (d) is an explanatory diagram of the structure of the end face of the soundproof board. [Figure 2] FIG. 1 is a process diagram for manufacturing a soundproof panel. [Figure 3] 1A is a plan view of a connector used in this embodiment, (b) and (c) are diagrams showing variations in the bending state of the connector, and (d) is a diagram showing the connecting state of adjacent soundproofing boards. FIG. [Figure 4] 1A is a front view of the soundproof belt used in this embodiment, FIG. 1B is a rear view, and FIG. 1C is a side view. [Figure 5] (a) is a right side view of a long-sized filling bag, (b) is a top view, (c) is a left side view, (d) is a front view, and (e) is a back view. [Figure 6] (a) is a right side view of a short-sized filling bag, (b) is a top view, (c) is a left side view, (d) is a front view, and (e) is a back view. [Figure 7] 1A is a top view of the soundproof bag used in this embodiment, and FIG. 1B is a side view. [Figure 8] FIG. 2 is a structural explanatory diagram of a soundproof bag. [Figure 9] FIG. 1 is a diagram showing one aspect of a soundproof wall unit according to an embodiment of the present invention. [Figure 10] FIG. 10 is a diagram showing another aspect of the soundproof wall unit of the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, an example will be described in which the present invention is applied to a soundproof wall unit that is temporarily installed to enclose a work site where various sounds, including sounds of frequencies other than audible, such as impact sounds when using power tools, motor sounds, collision sounds of metal parts, and worker vocalizations, are suddenly generated, for example, at a construction site for interior construction of a building. The soundproof wall unit of this embodiment is composed of multiple soundproof panels, flexible filling bags, soundproof bags for sealing gaps, and connecting devices, which are used as needed, for detachably connecting adjacent soundproof panels.

[0011] <Soundproofing board> FIG. 1(a) is a perspective view of a soundproof panel 100 according to this embodiment, (b) is a top view of the main surface (wide surface) viewed from above, (c) is a structural explanatory diagram of the side surface of the soundproof panel 100, and (d) is a structural explanatory diagram of the end surface of the soundproof panel 100. Referring to FIGS. 1(a) and 1(b), the soundproof panel 100 is a rectangular or approximately rectangular panel body with a length (longer side) of the wide surface (main surface) of W11, a width (width) of H11, and a height (thickness) of D11. These length and width dimensions W11 and H11 may be small enough to fit multiple sheets of the soundproof panel to the basic size of plywood (910 mm × 1820 mm). Multiple sheets of the same length and width dimensions W11 and H11 are manufactured, and in this case, it is desirable to keep the thickness D11 approximately the same. In addition, in Figures 1(c) and (d), for the convenience of explaining the structure, the components that are actually in contact are shown separated from each other, and therefore are shown as being larger than the thickness D11 of the actual soundproof panel 100.

[0012] The soundproof panel 100 has as its base a highly rigid plate 11 that will not deform even if struck by tools, metal parts, etc. The plate 11 can be made of wood (for example, lauan) plywood 112, the wide surface of which is a water-resistant surface 111. The wood plywood 112 is manufactured to a standard length and width size by heating and pressing multiple types of wood with different sound absorption rates, transmittance rates, or reflection coefficients, and is more rigid than a single-ply board of the same thickness, and also has a sound-absorbing and sound-blocking effect.

[0013] Furthermore, the water-resistant surface 111 is formed by polishing the exposed surface of the plywood grain of the wooden plywood and then coating it with a waterproof paint containing a hardener, etc., which has the effect of blocking the passage of perpendicular incident sound and reflecting sound incident at angles other than perpendicular. Of the reflected sound, the sound pressure of sound that returns to the wooden plywood 112 is attenuated and eventually disappears. The board 11 may be made by coating the surface of a general wooden plywood with a waterproof paint, but it can also be made from a wooden concrete panel (hereinafter abbreviated as "concrete panel"), which is plywood used for concrete formwork, cut to a specified size and used. The concrete panel may be the same as that used in concrete manufacturing, which improves the cost-effectiveness of soundproofing. In the following explanation, the board 11 may also be referred to as the concrete panel 11.

[0014] The soundproof panel 100 can be manufactured, for example, through the process shown in Figure 2. First, a plywood panel 11 of a predetermined size, for example, a size obtained by cutting the basic size of the plywood panel 11 (910 mm x 1820 mm) into an integer fraction, is set on a workbench. If necessary, eye nuts (registered trademark) are driven into the corners of the four end faces or wide faces (S101). Eye nuts are used to assemble a soundproof room by connecting multiple soundproof panels 100 at a predetermined angle to the main faces, or to reinforce the connectors 200 described below. The use of eye nuts allows the panel to be disassembled and reassembled repeatedly without damaging the component structure.

[0015] Once the plywood panel 11 of a predetermined size has been set on the workbench, a sheet-like soundproof rubber mat 12 is then cut to fit the length and width of the plywood panel 11 (S102). A commercially available soundproof rubber mat can be cut and used as the soundproof rubber mat 12. The soundproof rubber mat 12 can be thick enough to block the passage of sound and to absorb vibrations caused by sound pressure applied to the surface, particularly low-frequency sounds below 900 Hz.

[0016] Furthermore, cotton-like glass wool 13 is wrapped in glass cloth 14, and this is laminated on the exposed surface of the soundproof rubber mat 12 to create a composite sheet (S103). The glass wool 13 can be made of a material (commercially available) that absorbs vibration waves of various frequencies transmitted with random sound pressure from various directions, particularly sounds of various frequencies above 900 Hz, with a sound absorption coefficient of 90% or more. The glass cloth 14 absorbs sound by itself, but also serves to shape the glass wool 13 into a rectangular prism on the plate 11. The glass wool 13 and the glass cloth 14 can be made of materials with different sound absorption coefficients.

[0017] The glass cloth 14 may completely encase the glass wool 13, or may encase the glass wool 13 in a sheet shape with its wide portion exposed. The composite sheet thus produced functions as a composite sound-absorbing material that effectively absorbs sounds incident from various directions at various frequencies and sound pressures. This effectively blocks sound propagation both inside and outside the composite sheet.

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

[0019] Next, an end punched carpet 15 is attached to the end face of the plywood panel 11 (S105). The end punched carpet 15 prevents sound from entering through the end and from leaking to the outside. The end punched carpet 15 may be made of the same heat-insulating and vibration-proof fabric material as the back punched carpet 16 and front punched carpet 17 described below, or may be made of a different type of fabric material. Alternatively, a soundproof rubber sheet or other insulating sheet may be attached, or the end punched carpet 15 may be coated with a water-resistant paint.

[0020] Next, the back surface and all edge surfaces of the plywood panel 11 are covered with a back-surface punched carpet 16, and the edge of the back-surface punched carpet 16 is extended to near the edge surface of the front surface of the plywood panel 11, and then fastened with tucker needles 101 (S106). The exposed portion of the front surface of the plywood panel 11 is covered with a front-surface punched carpet 17, and fastened with tucker needles 101 (S107). The tucker needles 101 are driven into the plywood panel 11 so that each exposed portion is aligned in a straight line on the same plane as the exposed portions of adjacent needles 101, except for the corners of the plywood panel 11. In this case, driving the needles 101 at intervals such that the length of the exposed portion of each needle 101 is shorter than the length of the exposed portion of the adjacent needles 101 is effective in preventing peeling of the punched carpets 16, 17 and the diffusion of sound. Each punch carpet 16, 17 may be fixed with nails or wedges instead of the staples 101 of the tacker.

[0021] The back surface punched carpet 16 and the front surface punched carpet 17 are carpets made of nonwoven fabric with intertwined fibers, and the surface thereof is a fabric material to which a hook-shaped raised processed sheet fabric material (second fabric material) described below is attached in a releasable manner. Any fabric material other than punched carpet can be used as long as it can adhere to such a processed sheet fabric material and has heat insulating properties.

[0022] Finally, cut a cross shape near the eye nut with a cutter (S108). When using an eye nut, roll up the cut part. When not using an eye nut, return the cut part to its original position so that the eye nut is not exposed.

[0023] The soundproof panel 100 manufactured as described above uses the plywood 11 as the base material, the water-resistant surface 111 as the sound-insulating material, and the wood plywood 112 as the sound-absorbing material, so it is highly rigid and can function as a wall by itself. Furthermore, the soundproof rubber mat 12 suppresses the diffusion of low-frequency sounds below 900 Hz, and the glass wool 13 and glass cloth 14 absorb audible frequency sounds above 900 Hz, so there is no need to use expensive soundproofing materials, and soundproofing performance relative to manufacturing cost can be significantly improved. Furthermore, it is possible to assemble a soundproof wall unit of any size by arranging multiple soundproof panels 100 so that their main surfaces are on the same plane, or to form part of a soundproof room by connecting multiple soundproof walls in three dimensions.In addition, the soundproof wall unit can be disassembled and reassembled by disassembling each soundproof panel 100, which greatly simplifies temporary installation work.

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

[0025] <Connector> Next, a connector used to connect a pair of adjacent soundproofing panels 100 on the same plane will be described. FIG. 3(a) is a plan view of a connector 200 according to this embodiment. This connector 200 can be easily fabricated from a single metal plate, for example, a rectangular steel plate. That is, as shown in FIG. 3(a), a flat region 203 having a pair of long sides 2031, 2032 facing each other and parallel to the short sides is formed from approximately the center of the long sides of the metal plate, with a gap equal to the thickness of the soundproofing panel 100. In addition, an upper region of the metal plate that is relatively above the flat region 203 and a lower region that is relatively below the flat region 203 are each notched along three sides, excluding the long sides 2031, 2032, a predetermined distance inward from the outer edge. The regions other than the notched portions are frame-shaped.

[0026] For convenience, the frame-shaped region in the upper region is referred to as the first frame region 201. Furthermore, the region whose outer edge is the cut-out portion in the upper region is referred to as the first cut-out region 204. Similarly, for convenience, the frame-shaped region in the lower region is referred to as the second frame region 202. Furthermore, the region whose outer edge is the cut-out portion in the lower region is referred to as the second cut-out region 205.

[0027] The first frame region 201 and the second frame region 202 of the metal plate may be bent in a first direction, for example, vertically upward, or in a second direction, for example, vertically downward, relative to the flat region 203. However, the first cutout region 204 is bent in the opposite direction relative to the first frame region 201, and the second cutout region 205 is bent in the opposite direction relative to the second frame region 202. Figure 3(b) shows an example in which the first frame region 201 is bent in a first direction relative to the flat region 203, the first cutout region 204 is bent in a second direction relative to the flat region 203, the second frame region 202 is bent in the second direction relative to the flat region 203, and the second cutout region 205 is bent in the first direction relative to the flat region 203. 3(c) shows an example in which the first frame region 201 is bent in a first direction relative to the flat region 203, the first cutout region 204 is bent in a second direction relative to the flat region 203, the second frame region 202 is bent in the first direction relative to the flat region 203, and the second cutout region 205 is bent in the second direction relative to the flat region 203. Note that the bending may be performed in a manner in which the up-down direction of FIG. 3(b) is reversed.

[0028] In either case, a pair of first bent pieces extending in a first direction from one long side and the other long side of the flat region 203 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 flat region 203 and facing each other, are molded, and one of two adjacent soundproofing panels is sandwiched between the pair of first bent pieces, and the other of the two adjacent soundproofing panels is sandwiched between the pair of second bent pieces. Fig. 3(d) is a front view showing the state in which two adjacent soundproofing panels 100A, 100B are connected. The first frame region 201 sandwiches the front side of one soundproofing panel 100A, and the first cutout region 204 sandwiches the front side of the other soundproofing panel 100B.

[0029] By using the connector 200 having such a structure, a pair of soundproofing panels 100A, 100B whose end faces face each other can be easily connected or disconnected. Furthermore, even if the soundproofing panels 100A, 100B have different vertical and horizontal sizes, as long as they have the same thickness, they can be connected to form a soundproof wall unit in which the main surfaces of the soundproofing panels 100A, 100B are flush with each other, making it easy to assemble or disconnect them.

[0030] 3(a) and 3(d) show an example in which the metal plate is a rectangular steel plate, but the shape of the metal plate may be circular, elliptical, triangular, polygonal with five or more sides, or other shapes. The size may also be arbitrary. Furthermore, the first frame region 201 and the second frame region 202, and the first cutout region 204 and the second cutout region 205 may each have a different shape. Furthermore, after being connected, the soundproofing panels 100 may be temporarily fastened to each other with screws or the like.

[0031] <Soundproof belt> Next, a soundproof belt 300 according to this embodiment will be described with reference to FIG. 4. FIG. 4(a) is a front view of the soundproof belt 300, FIG. 4(b) is a back view, and FIG. 4(c) is a side view. The soundproof belt 300 has a front and back surface processed into a long bag shape. The front surface can be made of the same fabric material (first fabric material) 301 of the same color as the back perforated carpet 16 or the front perforated carpet 17 of the soundproof panel 100. The back surface can be made of a processed sheet fabric material (second fabric material) 302 that is raised into a hook shape and removably attached to the surface of the back perforated carpet 16 or the front perforated carpet 17. A fastener 303 is provided in the approximate center of the processed sheet fabric material 302. The fastener 303 is provided to fill the cavity between the front and back surfaces of the soundproof belt 300 with a rubber sheet, soft acrylic sheet, glass cloth, or the like to adjust its thickness. Note that the location of the fastener 303 in FIG. 4 is merely an example, and it may be located in another position. Also, other fasteners may be used instead of the fastener 303. Alternatively, a configuration may be adopted in which a rubber sheet, glass cloth, or the like is stuffed into the cavity and then sewn in place, without using a fastener.

[0032] The soundproofing belt 300 constructed in this manner provides vibration-damping effects through its fabric material itself, but by stuffing the interior with a rubber sheet or the like, it is possible to reduce the sound pressure of incident sound and prevent the diffusion of incident sound. Therefore, even if a small gap occurs between a pair of adjacent soundproofing panels 100, the gap can be blocked with the soundproofing belt 300, thereby preventing a decrease in the soundproofing performance of each soundproofing panel 100. Furthermore, since the front side of the soundproofing belt 300 is made of the first fabric material 301 that is the same color as each soundproofing panel 100, the gap can be covered and concealed. Furthermore, since the processed sheet fabric material 302 on the back side of the soundproofing belt 300 is a fabric material that can be peelably attached to the first fabric material 301, the gap can be easily covered and concealed. Furthermore, the soundproofing belt 300 can also be used in a stacked configuration.

[0033] <Refill bag> In some cases, intake and exhaust pipes or water supply and drainage hoses are installed in parts of a soundproof wall unit, and their locations cannot be changed. Also, when an existing wall is converted into a soundproof wall unit, piping may be installed in the wall. Therefore, in this embodiment, a filling bag will be described that seals around pipes, hoses, piping, etc. to prevent sound leakage, etc., when such pipes, hoses, piping, etc. are present.

[0034] 5 and 6 are explanatory diagrams of the structure of the refilling bag 500 of this embodiment, where (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. Figures 5 and 6 have the same structure except for the size, so for convenience they are given the same reference numerals.

[0035] The replenishing bag 500 has a bag body 501 made of a flexible third fabric material and having a substantially parallelogram shape when viewed from the right side or left side. The third fabric material may be pile carpet, but if flexibility is important, a thinner material such as a cotton-acrylic blend, a polyester-cotton blend, or a cotton-linen blend may be used. The bag body 501 shown in FIG. 5 measures 910 mm in the longitudinal direction and 70 mm in width. The bag body 501 shown in FIG. 6 measures 455 mm in the longitudinal direction and 70 mm in width. The bag body 501 is filled with at least one of a sound-absorbing material and a sound-insulating material. The sound-absorbing material may be a commercially available polyester material with a sound absorption rate of 90% or more at frequencies of 900 Hz or higher. The sound-insulating material may be a commercially available sheet material made of an olefin resin blended with a high specific gravity component.

[0036] The front end of the bag body 501 is provided with an inclined portion 5011 and a non-inclined portion 5012. The rear end of the bag body 501 is provided with an inclined portion 5013 and a non-inclined portion 5014. The inclined portions 5011 and 5013 are provided to reduce the gap in the center when the bag body 501 is wound spirally from the center toward the periphery and to reduce the deviation in the outer diameter. They are also provided to ensure that the ends face each other to form a ring of approximately the same diameter. The non-inclined portions 5012 and 5014 are provided so that the inner corners of the refilling bag 500 dig into the bases of the inclined portions 5011 and 5013 when the refilling bag 500 is wound, preventing the refilling bag 500 from separating. Although the non-inclined portions 5012 and 5014 are corners in the illustrated example, they actually have a shape close to an R shape because the filling bag 500 is filled with sound absorbing material or the like.

[0037] The filling bag 500 configured in this manner is used to fill gaps around pipes, etc., for example, when the pipes, etc. are located in the center of a rectangular parallelepiped space surrounded by multiple soundproof walls 100. The relatively long filling bag 500 shown in Fig. 5 is often used by wrapping it around a pipe, etc. in a spiral shape, but because the pair of ends are inclined portions 5011, 5013, it is possible to reduce the gap at the beginning of wrapping it around the pipe, etc. Even at the outermost end, it is possible to reduce the gap between the end face of the soundproof wall 100. Furthermore, the spiral or annular shape can be maintained by the non-inclined portions 5012, 5014. Therefore, sound transmitted to the filling bag 500 through the piping is absorbed by the sound-absorbing or sound-insulating material filled in the bag body 501, and the sound is prevented from diffusing around the piping.

[0038] <Soundproofing bag> Next, we will explain the soundproof bag 600 according to this embodiment. This soundproof bag 600 is configured to include a bag body that can enter gaps that cannot be completely blocked by the soundproof panel 100 described above, and whose volume changes depending on the amount of fluid that enters through the fluid intake mechanism.

[0039] 7(a) is a top view of an elastic tube (a rubber tube in this example) 601, which is a main component of the soundproof bag 600, and FIG. 7(b) is a side view. FIG. 8 is an explanatory diagram of the structure of the soundproof bag 600. In this embodiment, an example is given in which compressed air is used as the fluid. The bag body is mainly constructed by abutting a sound-absorbing material 612 and a sound-insulating sheet 613 around a rubber tube 601, which has an air-filled space 610 formed inside, and then covering the entire bag with a first fabric material (punch carpet) 602 of the same color as that used in the soundproof panel 100.

[0040] The rubber tube 601 is rectangular in top view as shown in Fig. 7(a), and is approximately oval 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 this embodiment, the fluid intake mechanism includes an American valve 604 as a main component. The American valve 604 has the same structure as those used in American automobiles and motorcycles, and is commercially available as a valve that can withstand air pressures of 300 to 600 kPa. That is, a spring is attached to the plunger (valve body), and the valve is opened and closed by the expansion and contraction force of this spring. It is highly durable and is said to have the least air leakage and excellent air retention compared to British valves and Presta valves.

[0042] In this embodiment, a fluid intake mechanism is used in which a valve base 6040 is fixed to the inside of 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 base 6040 and a valve stem 6041 on the outside of the rubber tube 601, and the valve base 6040 is fastened and fixed with a nut 6046. The valve stem 6041 is L-shaped, and is fixed with a nut 6047 to the output part of an air compressor (not shown).

[0043] The size of the rubber tube 601 is arbitrary, but as an example, the length L71 in the longitudinal direction is approximately 910 mm, which corresponds to the width of the basic size of the plywood 11, the length (protrusion amount) L72 of the rubber plates 605, 606 is 15 mm, the length L73 from the tip of one of the rubber plates 605 to the mounting position of the Schmidt valve 604 is 150 mm, and the thickness D71 is 6 mm.

[0044] When soundproof bag 600 with this structure is in its initial state after being deflated, its size is only the thickness of rubber tube 601, sound absorbing material 612, and shielding sheet 613. In this initial state, Schmidt valve 604 is brought to the front and set into a narrow gap, and then compressed air is injected through Schmidt valve 604, causing soundproof bag 600 to expand and close the gap. When disassembling, the air is deflated to return it to its initial state, and when reassembling, compressed air is injected as described above.

[0045] <How soundproofing panels are used> Next, usage of the soundproof panel 100 etc. will be described. FIG. 9 is a diagram showing one aspect of the soundproof wall unit of this embodiment, illustrating a partial example of a soundproof wall unit in which eleven soundproof panels 100a to 100k are connected and abutted against the surface of an existing wall of a building. Here, an example is shown in which soundproofing boards 100a to 100d and soundproofing boards 100e to 100h are the same size, but soundproofing boards 100i to 100k are the same height but smaller in width. Also, although this is not necessarily the case, connectors 200a to 200c that connect soundproofing boards 100a to 100d and connectors 200e to 200g that connect soundproofing boards 100e to 100h are the same size, but connectors 200h, 200i that connect soundproofing boards 100i to 100k are slightly smaller in size. Also, gaps are formed between the smaller soundproofing plates 100i to 100k and the larger soundproofing plates 100e to 100h. Therefore, three soundproofing bags 600A to 600C of different lengths are fitted to fill the gaps and expand with compressed air via Schmidt valve 604 to close the gaps. Also, at the top of the figure, there is an existing pipe 900. Since the periphery of this pipe 900 cannot be sealed with soundproofing panel 100, the periphery of the pipe 900 is sealed by wrapping supplementary bag 500 around it.

[0046] Fig. 10 shows an example in which soundproofing strips 300A-300F are attached to the soundproof 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 risk of leakage from the joints between soundproofing panels 100a-100h or gaps in soundproofing bags 600A-600C. Furthermore, since connectors 200a-200g are exposed, a patchwork appearance remains. Therefore, in the example of Fig. 10, soundproofing strips 300A-300F are attached to the joints, and additional soundproofing strips 300G-300L are attached on top of these soundproofing strips 300A-300F. The soundproof belts 300A-300L are punch carpets of the same color and material as the soundproof boards 100a-100h, so the soundproof wall unit can be used as a single soundproof wall without any sense of incongruity. In the example of Fig. 10, the soundproof belt 300 is not attached to the portion of the filling bag 500 near the piping 900, but by using a soundproof belt 300 of a size that partially overlaps the soundproof boards 100a, 100i, and 100e around the filling bag 500, the exposed area of ​​the filling bag 500 can be reduced.

[0047] As described above, according to this embodiment, a plurality of soundproof panels 100 that prevent the diffusion of sounds of various frequencies are connected in a detachable manner using connectors 200, and soundproof belts 300 are attached in a removable manner to any gaps that arise when the panels are connected. If the gap is large, it is sealed with a soundproof bag 600, and if a pipe 900 is present, the area around it is sealed with a filling bag 500. This makes it possible to prevent the diffusion of noise of various frequencies and to realize a soundproof wall unit that is easy to disassemble and reassemble. It goes without saying that the manner in which the soundproof board 100, the connector 200, the filling bag 500, and the soundproof bag 600 are used is not limited to the manner shown in FIGS. Furthermore, a soundproof wall unit using the soundproof panel 100 of this embodiment can be used as a soundproof wall not only at construction sites but also in homes and offices.

Claims

1. A sound-insulating sheet is fixed to a plate body, The sound-insulating sheet and the exposed surfaces of the plate body are covered with a first fabric material, A sound-absorbing material is interposed between the sound-insulating sheet and the first fabric material. Soundproofing board.

2. The sound-insulating sheet is made of rubber, resin, or a combination thereof. The soundproof panel according to claim 1.

3. The first fabric material is a heat-insulating, vibration-proof fabric material. The soundproof panel according to claim 1.

4. A soundproof belt used together with the soundproof panel according to claim 1, 2 or 3, a second fabric material is provided on the back surface side so as to be releasably attached to any portion of the first fabric material, and the first fabric material is provided on the front surface side; Soundproof belt.

5. A connector made of a metal plate used with the soundproof panel according to claim 1, 2 or 3, wherein one of the metal plates is: a planar area having a pair of long sides facing each other with an interval corresponding to the thickness of the soundproofing 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, respectively, and facing each other; a pair of second bent pieces extending in a second direction from one long side and the other long side of the planar region, respectively, and facing each other; One of the two adjacent soundproofing panels is sandwiched between the pair of first bent pieces, and the other of the two adjacent soundproofing panels is sandwiched between the pair of second bent pieces. Connector.

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